EP0906648A1 - Electric cell with sealed metal casing - Google Patents

Electric cell with sealed metal casing

Info

Publication number
EP0906648A1
EP0906648A1 EP98917242A EP98917242A EP0906648A1 EP 0906648 A1 EP0906648 A1 EP 0906648A1 EP 98917242 A EP98917242 A EP 98917242A EP 98917242 A EP98917242 A EP 98917242A EP 0906648 A1 EP0906648 A1 EP 0906648A1
Authority
EP
European Patent Office
Prior art keywords
box
disconnector
current
conductive
cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98917242A
Other languages
German (de)
French (fr)
Other versions
EP0906648B1 (en
Inventor
Thierry Starck
Jean-Marc Bouchonnier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0906648A1 publication Critical patent/EP0906648A1/en
Application granted granted Critical
Publication of EP0906648B1 publication Critical patent/EP0906648B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/20Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
    • H02B1/22Layouts for duplicate bus-bar selection
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035Gas-insulated switchgear

Definitions

  • the invention relates to electrical power distribution cells, medium voltage, having a metal box in which electrical equipment is installed, this equipment including at least one circuit breaker and often a disconnector, the box being designed waterproof and commonly filled with a dielectric shielding gas and the electrical connections between the external connection conductors and the equipment housed in the box being effected by watertight current crossings
  • a medium voltage cell with a sealed metal box filled with a gas of protection
  • This cell comprises a box in and around which various elements of electrical equipment are placed The arrangement of the elements is carried out so as to obtain a great compactness and to make it possible to carry out all operating operations on the cell front panel
  • this cell has a watertight waterproof box, the manufacture of which is delicate, because this box has a lower recess provided to allow the connection of the cables.
  • the connecting conductors between the circuit breaker elements and the disconnecting elements have complicated shapes and relatively long lengths due to the fact differences in position existing between the circuit breaker elements provided for the different phases of electrical distribution, which are arranged in width in the box, and the disconnecting elements which are arranged in depth
  • German patent application 29501081 9 This document presents a variant a longitudinal coupling comprising a set of busbars and a transverse coupling variant comprising two sets of ba r res in ette second variant, the side-to-side elements of the two switches with a major axis perpendicular to the front of the he cell involves the implementation of a waterproof box different from that provided for the first variant
  • the various connecting conductors also have complicated shapes and relatively large lengths which cause unnecessary dissipation of energy by Joule effect
  • the invention therefore proposes a medium-voltage cell with a watertight metal casing which is simpler in shape and which makes it possible to house the electrical equipment elements necessary for the production of different variants, and in particular cells with longitudinal or transverse coupling in minimum volume and with minimum lengths of conductive connections between elements
  • the electrical cell according to the invention comprises a sealed metal box containing at least one three-phase circuit breaker and a disconnector so as to ensure interconnection of external busbars and / or of external electric cables individually connected to the inside of the box at through watertight current bushings, the front circuit breaker of the breaking chambers arranged horizontally and perpendicularly to a front face of the box through which this circuit breaker is controlled, the disconnector at least two positions is also controlled through said front face and comprises movable knives each articulated on a load-bearing, conductive and fixed part, carried by at least one insulating support of an interrupting chamber to a movable contact to which this part is connected.
  • the rectangular parallelepiped box and optimally cubic includes a disconnector whose knives mo biles are oriented at least approximately vertically in a position, called service, for which these knives are in contact with conductive pads which are aligned horizontally in parallel to the front face and which are located above the disconnector relative to the circuit breaker to the circuit breaker in the box and which are connected to first sealed current crossings carried by an upper face of the box
  • the cell comprises first current crossings arranged on the upper face of the box in such a way that a first central current crossing is directly above the central block and movable knife of the disconnector and that the other two first current crossings are diagonally aligned with respect to this first central current crossing and are respectively connected to a different stud by a first individual busbar, these ba rres, parallel and arranged orthogonally to the front face, being positioned symmetrically vis-à-vis the first central passage in the box
  • the disconnector whose knives mo biles are oriented at least approximately vertically in a position, called service, for which
  • the box in a grounding position, said movable knives, at least approximately oriented horizontally, are each in contact with a grounding stud carried by a crosspiece of horizontal reinforcement disposed centrally between side walls of the box above the circuit breaker breaking chambers
  • the box comprises a disconnector whose, in the sectioning position, the movable knives are electrically isolated from the pads connected to the first current bushings and earthing studs or these knives are rocked halfway between the two service and earthing positions
  • the box has second bushings current arranged so that a second current crossing, called central, is directly above the central stud and the movable knife of the additional disconnector, that the other two second current crossings are diagonally aligned with respect to this second central current crossing and are respectively each connected to a different pad by a second individual busbar, these two second bars being positioned in a symmetrical manner With respect to the central bushing corresponding to
  • the disconnector and the additional disconnector have their corresponding elements arranged in alignment and at the same horizontal level in the box as well as the first and second bars of the same phase
  • the box is provided with external unipolar hanger tubes which each connect to the box at the level of household orifices in the rear part of the flat bottom wall of this box, which has each ensures the passage of a different conductive element, the latter penetrating into the box to connect to a fixed conductive part carried by at least one insulating support of an interrupting chamber with fixed contact to which this part is electrically connected and which each allow the connection of at least one unipolar electrical cable via a leaky leaktight current crossing at a end of the tube which contains it and oriented horizontally and towards the front of the box under which the tubes are positioned
  • the box is provided with straight, external unipolar tubes, which each connect to the box at the level of household orifices in the rear part of the flat bottom wall of this box, behind of those provided for possible single-pole hanger tubes, each of which ensures the passage of a different conductive element penetrating into the box to connect to a fixed conductive part carried by at least one insulating support of an interrupting chamber with fixed contact to which this part is electrically connected and which in particular each allow the connection of a phase of an external voltage transformer
  • the box comprises second watertight current crossings carried by the upper face of this box behind the first current crossings in an arrangement identical to that of the latter with respect to this the front face, these second crossings being respectively connected each to one of the first crossings by a conductive bar which is common to them and which is housed inside the box parallel to the upper face of the box, these bars being parallel to each other
  • the cell comprises a box in which the disconnector and the additional disconnector are symmetrically arranged with respect to a plane passing through the earthing studs, the additional disconnector having movable knives each mounted on a conductive carrier part fixed on at least one insulating support of a breaking chamber, the movable knives of the additional disconnector being electrically connected each to a fixed contact of one of the breaking chambers to the movable contact to which is electrically connected a movable knife of the disconnector accommodates in the same box
  • the box comprises an additional disconnector having movable knives which are respectively positioned each with the movable knife of the same phase of the disconnector with which it is housed in the same box, on load-bearing, fixed and conductive parts, which are fixed on at least one fixed insulating support of the breaking chamber and which are electrically connected together by a connection which extends in the space existing between the cut to which the insulating support is affected and the
  • the cell comprises a box with disconnector and additional disconnector symmetrically arranged with respect to a plane passing through the grounding studs, the additional disconnector having movable knives each mounted on a fixed conductive support piece electrically connected to a fixed contact of one of the interrupting chambers by means of a fixed conductive piece, carried by at least one insulating support for this interrupting chamber, and of two conductive elements connected to crossings watertight and connected to each other outside the box through an insulated conductor and hanger and connectors allowing the mounting of current and voltage transformers outside the box, the conductive part, a first of the elements conductor, the conductor insulates, a second of the conductive elements and the fixed conductive part relating to a knife being electrically serial in that order
  • the cell comprises a box in which the additional disconnector has movable knives which are respectively positioned each with the movable knife of the same phase of the disconnector with which it is housed in the same box, on load-bearing, conductive parts, which are fixed on at least one fixed and insulating breaking chamber support and which are electrically connected to each other by a connection which extends in the space existing between the breaking chamber to which the insulating support is affected and the crosspiece that the box comprises
  • the box comprises current crossings carried by the upper face of this box, intended to be connected to overhead distribution lines via of unipolar connecting conductors connected to the respective external parts of the current bushings, each conductor being provided with an insulating elastomeric sleeve which covers it at the end and which is fitted on the external part of the current bushing to which this conductor is connected
  • the box comprises current crossings intended to be connected to overhead distribution lines by means of unipolar connecting conductors which are provided with insulating elastomeric sleeves and around which are mounted current transformers, toroidal type
  • the box is filled with a dielectric protection gas
  • Figure 1 presents a diagram of a cell called ar ⁇ vee-depart according to the invention seen laterally and in section.
  • FIG. 2 shows a partial block diagram of a variant of departure cell assumed to be seen from above and fictitiously through the upper face of the box of this cell.
  • FIG. 3 presents a diagram in lateral section of the variant of cell shown in figure 2
  • Figure 4 shows an electrical diagram of a so-called coupling cell according to Figure 3
  • FIG. 5 shows a diagram of a bar shifting start-up cell according to the invention, seen laterally and in section
  • Figure 6 shows a block diagram showing the busbar connections between two feeder cells via a longitudinal coupling cell
  • FIG. 7 shows a diagram of a variant of a longitudinal coupling cell provided with external measuring transformers accessible while the bars are energized
  • FIG. 8 shows an electrical diagram of the variant coupling cell according to FIG. 7
  • FIG. 9 shows a diagram of a variant of a double busbar cubicle
  • FIG. 10 shows an electrical diagram of the variant of double-busbar cubicle according to FIG. 9
  • Figure 1 1 shows a diagram of a variant cell arrangement for outdoor use with current bushings connectable to overhead lines
  • Figure 12 shows a top view of a cell according to Figure 1 1
  • FIG. 1 The example of a three-phase start-up cell shown in FIG. 1 comprises a box 1 of rectangular parallelepiped shape, optimally cubic, produced in a manner known to those skilled in the art to be waterproof
  • This box here assumes sheet metal, is designed to contain various elements of electrical equipment including in particular the elements of at least one circuit breaker having three poles whose respective axes are oriented perpendicular to one of the walls of the box intended to constitute the front face of the cell, this wall being here referenced FA
  • the poles are arranged side by side in a horizontal plane, they are here assumed to be aligned behind that which is symbolized by one of its three interrupting chambers 2
  • These chambers are for example of the vacuum interrupting chamber type or chamber filled with a gas protective dielectric, such as SF6
  • An operating mechanism 3 of the circuit breaker is positioned in front of the box II comprises at least one operating connecting rod 4 which passes through the front face FA by a sealed crossing device 5 and which controls the breaking chambers 2 The latter are worn by insulating supports 6 which are fixed inside the box 1 on the wall constituting the front face FA
  • the box 1 is also designed to be able to contain the elements of at least one disconnector here assumes a three position which takes place above the poles of the circuit breaker
  • This disconnector comprises three pairs of movable contact knives 7 which are directly articulated each on a carrier piece 8, conductive and fixed, mounted on the insulating supports 6 of a breaking chamber 2 in mobile contact of which this piece 8 is electrically connected bn only knives is shown here
  • the three movable knives 7 are in contact with three conductive pads 9 carried by conductive bars 10 disposed under the wall constituting the upper face FS of the cell.
  • These bars 10 are here rectilinear and extend perpendicularly. on the front face FA of the box They are positioned above the disconnector relative to the circuit breaker in this box
  • the knives are for example oriented vertically, as shown in dotted lines
  • sectioning position the movable knives 7 are moved away from the studs 9 so that sufficient sectioning distances between knives and studs 9 are respected.
  • the knives are for example tilted halfway between the mentioned position. above and the one described below
  • the movable knives 7 are in contact with three conductive pads 1 1 which are connected to an earth collector of the box, only one of these pads being represented.
  • Each movable knife is for example oriented at less roughly horizontally, as shown in solid lines
  • the movable knives 7 are actuated by a control mechanism 12 outside the box 1
  • An operating rod 13 of the control mechanism passes through the front face FA by a sealed crossing device 5A identical or similar to the crossing device waterproof 5 mentioned above
  • This rod acts on a mechanism comprising a shaft 1 5, levers 16 and insulating rods 16A
  • the operating rod 13 acts on a lever which partially rotates the shaft 15
  • the latter drives three levers which control individually the passage of the movable knives 7 from one position to the other by means of the insulating rods
  • the shaft 15 is carried by bearings 18 fixed on the wall of the front face FA inside of the casing 1 Only one of the stages 1 8 is here represents
  • the studs 1 1 for earthing are carried by the same support which is for example a metal cross member 3 1 positioned in the central part of the box, between the two side walls of the latter this cross member also serving reinforcement and making it possible to improve the pressure resistance or possibly depression of the cell
  • the conductive bars 10 are intended to be connected to external three-phase conductors A, B, C located outside the box by means of crossings of current 17 A, 17B, 17C carried by the wall constituting the upper face FS of this box Each current crossing carries a bar 10 which it is here supposed to connect to an external conductor, for example by a connector 14A, 14B or 14C Ce external conductor is for example one of the conductive bars of a three-phase set of bars located outside and above the box
  • the three current crossings 17 A, 17B, 17C carried by the casing 1 are arranged diagonally, with respect to the front face FA on the upper face FS d 'rectangular and preferably square shape of this box, so that the current crossing of the central phase referenced 17C is directly above the corresponding stud 9 as well as the corresponding movable knife 7, when the latter is in the service position as well as as shown in Figure 1
  • the two other current crossings 17A, 17B, diagonally aligned on either side of the central phase current crossing 17C are then connected to the pads 9 which correspond to them
  • the corresponding connections are provided by the bars conductive 10 which are identical and positioned symmetrically with respect to the central phase bushing 17C and to the corresponding stud 9 in the box 1
  • the assembly forms by the functional elements contained in the box 1 between disconnector and bushings current, as described so far, is housed in the upper front part of the box, this part corresponding approximately to a quarter of this box
  • each is connected by a first end at the level of household orifices in the rear part of the flat bottom wall FI of the box 1
  • These tubes each allow the passage of a conductive element hanger 20, different , entering the box to connect to a fixed conductive part 21 carried by the insulating supports 6 of a breaking chamber 2 at the co ntact fixed from which this part 21 is electrically connected
  • the second end of the unipolar tubes 19 is connected to a waterproof current bushing 22 here assumed to have a horizontal axis
  • Each waterproof bushing 22 is here provided to allow connection from the front of one or of several unipolar electrical cables 0 per phase, this connection being made to the moven of connectors known per se
  • the second ends of the unipolar tubes 19 possibly include a portion here provided horizontal making it possible to receive current transformers 23, external and of the type toric
  • external unipolar tubes 24 are capable of being connected each by a first end at the level of household orifices in the flat bottom wall FI of the box 1 behind those household for the external unipolar tubes 19 if these are provided
  • These tubes 24 which are here assumed to be straight each allow the passage of a different conductive element 25 which penetrates into the box to connect to a fixed conductive part 21 of one of the cut-off 2
  • the second end of each of the unipolar tubes 24 is provided with a watertight current bushing 26 here shown vertical
  • Each watertight bushing 26 is here supposed to be provided to allow a connection of at least one connection element 27 in T provided for the connection of an external voltage transformer 28
  • An example of a coupling cell developed from a cell such as evoked above and comprising an additional disconnector is shown in Figure 3, it allows for example to make an arrangement according to an electrical diagram shown in Figure 4
  • Such an arrangement allows longitudinal coupling between a set of three-phase external conductors A, B, C connected to the current bushings 17A 17B, 17C and a set of three-phase external conductors A, B ', C connected to the current bushings 17'A, 17'B and 17'C arranged behind the previous ones on the upper face of the box 1 '
  • the coupling is carried out here by 1 through a succession of elements comprising a movable knife disconnector 7 and a circuit breaker a breaking chambers 2, both analogous to those provided in FIG.
  • this additional disconnector has its movable knives 7' each positioned respectively between a fixed contact of one of the breaking chambers 2 and one of the conductive bars 10 ′ as shown in FIG. 3
  • the additional disconnector which is included in the box 1 ′ of a cell similar to that previously detailed is also a three-position disconnector which is identical to the movable knife disconnector 7
  • These two disconnectors are symmetrically arranged with respect to a vertical plane, not shown and supposed to pass through the 1 1 earthing studs, this plane being parallel to the front face FA of the box
  • the movable knives 7 ′ of the additional disconnector are each articulated on a support piece 8 ′, fixed and conductive, itself carried by the insulating supports 6 of one of the interrupting chambers 2 in fixed contact with which this support piece 8 ′, is electrically connected in the box
  • These knives are for example oriented vertically , as shown in dotted lines
  • the pads connected to the ground are the pads 1 1 which can simultaneously also receive knives 7 and 7 'from the two disconnectors
  • Each movable knife is for example oriented at least approximately horizontally, as shown in solid lines In the sectioning position, the movable knives 7 are, for example, tilting halfway between the two positions mentioned above.
  • the additional disconnector has a specific control mechanism which is external to the box 1 ', as does the control mechanism 12 a side of which it is located in front of said box
  • This mechanism comprises an operating rod 13 ′, partially shown which passes through the front face FA by a waterproof crossing device identical or similar to the waterproof crossing device 5 mentioned above, from so as to go along one of the side walls of the box and to be articulated on one of the levers 16 'of a movement transmission mechanism by levers 16' and insulating rods 16'A similar to the mechanism with levers 16 and rods 16A
  • the levers 16 ' are carried by a rotary shaft 15' and three of them are connected to the knives 9 'by means of three insulating connecting rods 16', to ensure the movements of s movable knives 7 between the positions mentioned above
  • the conductive bars 10 ′ are intended to be connected to conductors, located outside the box, by means of current crossings 17 ′ A, 17 ′ B, 17 C carried by the wall constituting the upper face FS of this box
  • Each current crossing 17'A, 17'B, 17'C makes it possible to connect a conductive bar 10 'located inside the box to a different external connection conductor A', B 'or C located at outside and above said box
  • connectors 14 ′ A, 14 ′ B and 14 ′ C are provided to ensure these connections and to allow their possible disconnection
  • the three current bushings 17'A, 17'B, 17'C are provided arranged diagonally on the upper face FS of this box, as are the bushings 17 A, 17B, 17C
  • the bushing current 17'C of the central phase is positioned directly above the corresponding stud 9 'as well as the corresponding movable knife 7, when the latter is in the operating position
  • the other two current crossings diagonally aligned on either side of the central phase current crossing are then connected to the pads 9 'which correspond to them
  • the corresponding connections are provided by the bars 10' positioned symmetrically with respect to the vertical plane which passes through the central phase bushings 17C and 17'C and the studs 9 and 9 'and which is perpendicular to the plane defined by the front face FA
  • the assembly formed by the functional elements contained in the box 1 between additional disconnector and current crossings 17'A, 17'B, 17'C, as described so far is housed in the rear upper part of the box, this part also corresponding at least approximately
  • external unipolar hanger tubes 19 are connected at the level of household orifices in the rear part of the flat bottom wall FI of the box Id 'in a manner similar to that provided at the level of the cell presented in figure 1
  • FIG. 6 shows an example of connection between two inlet and outlet cells with boxes 1 and 1 "by means of a box coupling cell 1 'aligned with one another
  • the inlet and outlet cells with box 1 is assumed identical to that presented in figure 1
  • the box coupling cell 1 ′ is assumed to be identical to that shown in FIG. 3
  • the arrival-departure cell with box 1 " is assumed to be identical to that presented in FIG. 5
  • the ar ⁇ vee-depart boxes 1 and 1 each receive a different set of three-phase external conductors references A, B, C for one and A ', B', C for the other
  • the conductors of the two sets are parallel to each other and to the front face of the boxes in each set and aligned two by two from one set to the other They are also respectively connected to the current bushings 17A, 17B 17C located near the front face of the box or they terminate
  • the coupling function of a set of three-phase external conductors is thus achieved using a single coupling cell composed using standardized elements, such as the circuit breaker, disconnectors and bars
  • the 1 "box arrival-departure cell fulfills the same function as a departure 1 arrival cell, that is to say it allows the supply of a cable departure from a set of external conductors via a circuit breaker and a disconnector It also makes it possible to compensate simply by means of 10 "bars the offset between current crossings of the same phase as introduced by the box of the cubicle 1 'coupling
  • FIG. 7 Another example of a coupling cell box D is shown in FIG. 7, it allows an arrangement to be made according to an electrical diagram as shown in FIG. 8
  • This cell is developed from a coupling cell with a box 1 'as mentioned above, it is provided with an external conductive connection making it possible to connect the fixed contacts of the interrupting chambers 2 to the conductive carrying parts 8 "of the movable knives 7' of the additional disconnector
  • This external connection is here equipped with transformers current 23 and voltage 28, external to the box These transformers are liable to be affected and in particular dismantled, if necessary, when the busbars are energized
  • the coupling is carried out by means of a movable knife disconnector 7, a circuit breaker with breaking chambers 2 and a movable knife disconnector 7 '
  • the movable knives 7 ′ of the additional disconnector are here each articulated on a conductive carrying part 8 ", called auxiliary, slightly different from the carrying parts 8, 8 '
  • This auxiliary carrying part 8" is here fixed on additional insulating supports 6 "doors by a fixed conductive part 21, identical to that provided in the cell presented in FIG. 1
  • the part 21 is fixed on the insulating supports 6 of the fixed contact of a breaking chamber 2 in an identical manner
  • Each auxiliary carrier part 8 " is connected to a conductive element 25
  • External single-pole hanger tubes 19 are each connected by a first end at the level of household orifices in the rear part of the plane lower wall of the box. These tubes each contain a conductive element.
  • hanger 20 which penetrates into the box to connect by a first end to a fixed conductive part 21 connected to the fixed contact of a breaking chamber 2, as previously
  • a second end of each single-pole hanger tube 24 is provided with a bushing waterproof 22 which receives a T-connector 29, of known type A conductive bar 30, sheathed in insulation and mounted externally to the box, makes it possible to connect each conducting element 20 to that of the conducting elements 25 which corresponds to the same phase in the box
  • Each busbar 30 is here connected to two current crossings 20 and 26 relating to the same phase by two connectors 27 and 29 , for example at the median sockets of the latter
  • the connectors 27 are positioned vertically with their respective center sockets facing forward and the connectors 29 are positioned horizontally with their respective center sockets facing downwards and the busbars 30, which are bent, are each mounted between the respective center taps of two connectors 27, 29 relating to the same phase
  • Current transformers 23 and voltage transformers 28 are associated with the various conducting elements 20 and 25, in the same way as in the case of the box cell 1 presented in figure 1 They allow respectively a measurement of the current passing through the busbars 30 and of the voltage at these bars
  • This diagram shows an example of a 1 '"cell box intended to allow the supply of a cable feeder from two sets of three-phase external conductors A, B, C and A', B ', C, here two sets bars, this box comprising a circuit breaker and two disconnectors 7 and 7 'like the boxes 1' and the D
  • the arrangement of the box 1 '"shown in FIG. 9 differs from the previous ones in that the disconnector with movable knives 7 and the disconnector with movable knives 7' have their knives of the same phase articulated on load-bearing parts 8 and 8 '" which are fixed on the insulating supports 6 and which are electrically interconnected two by two, as shown in FIG. 9 for the two parts 8 and 8 '"visible in this figure
  • the connection established between two parts 8 and 8" "connected to the movable contact d 'one of the circuit breaker interrupting chambers 2 here has an elongated part which here extends parallel to this chamber between the space existing between the latter and the reinforcing cross member 3 1 which the box comprises
  • the double busbar cell mentioned above has the important advantage of using components already used with cells 1 and 1 ".
  • the cell arrangement shown in FIG. 1 1 is more specifically adapted to the case where the cell, of "dead tank” type, according to the invention is intended to be used outdoors in connection with overhead lines to which at least some of the current crossings of the cell are connected
  • the cell itself is similar to that presented in FIG. 3 apart from the fact that the current crossings of the box 1 "" which it comprises are optionally aligned there parallel to the front face FA in one or here two rows of three bushings as seen in FIG.
  • a sleeve made of insulating elastomeric material 32 covers a unipolar connecting conductor 33 for connection to one of the phase wires an overhead connection which is connected to the box 1 "" at one of the current crossings, such as 17C, carried by the upper face FS of the box
  • This sleeve is fitted onto the external part of this current crossing, it is dimensioned in a manner known per se so as to allow the necessary dielectric distances to be obtained between phase conductors and between phase and earth conductors II comprises fins so as to increase the length of the creepage line
  • the unipolar connecting conductors are bent in a manner known per se so as to increase the dielectric
  • a box such as 1 "" makes it possible to produce medium-voltage cells, gas-insulated for outdoor use and connection to overhead distribution lines, which include a circuit breaker, one or more disconnectors and some of the essential connecting electrical elements housed in a relatively small container by compared to known cell arrangements and this with standardized constituent elements, at least some of which are common to various variants of cells according to the invention
  • the electrically located disconnectors on either side of the circuit breaker are provided of the three-way type positions as indicated above, it is possible to earth or short-circuit either and / or the other of the upstream and downstream overhead lines connected to one or other of these disconnectors
  • An earthing is carried out for example with a disconnector whose knives are in the commissioning position and therefore connected to the current bushings, such as 17A, 17B, 17C, serving the line to be short-circuited by setting earthing position of the knives of the second disconnector and by closing the circuit breaker by taking advantage of the closing power on the short circuit specific to the latter
  • the operation can of course be carried out in an equivalent manner by reversing the positions of the disconnector in the case where the line is served by current crossings 17 ', 17'B, 17 * C
  • the sealed current crossings 17 are fixed to one of the ends of inclined metal tubes fixed by another end to the box at the level of the household orifices in the upper face FS for these current bushings.
  • the difference in orientation between tubes is then chosen so that the necessary dielectric distance between the ends of the insulating sleeves with which the bushings are respectively fitted is respected.
  • These sleeves are then likely to be straight sleeves simpler and less expensive than those shown in Figure 1 1

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Patch Boards (AREA)

Abstract

Disclosed is a cell comprising a casing containing a three-phase disconnecting and isolating switch, which ensure interconnection between the bars and/or external electric cables connected inside the casing through sealed press leads. Said casing, being optimally cubic, comprises an isolating switch, the blades (7) of which are in contact in a service position with conducting studs (9); said studs are aligned horizontally and parallel to the front panel of the casing, and are borne by conducting bars (10) orthogonally arranged with respect to this surface, above the isolating switch and the disconnector in the casing. These bars are connected to press leads (17A, 17B, 17C), borne by a top panel (FS) of the casing. In a ground connection position, the blades are in contact with one of the grounding studs (11) borne by a horizontal reinforcing crosspiece (31), centrally arranged between lateral walls in the casing.

Description

Cellule électrique a caisson métallique etancheElectrical cell with waterproof metal box
L'invention concerne les cellules de distribution électrique de puissance, moyenne tension, ayant un caisson métallique dans lequel de l'appareillage électrique est installe, cet appareillage incluant au moins un disjoncteur et souvent un sectionneur, le caisson étant conçu etanche et couramment rempli d'un gaz diélectrique de protection et les liaisons électriques entre les conducteurs de liaison externes et l'appareillage loge dans le caisson s'effectuant par des traversées de courant etanches Un exemple de cellule moyenne tension, a caisson métallique etanche rempli d'un gaz de protection, est notamment fourni par le modèle d'utilité allemand G94201935 Cette cellule comporte un caisson dans et autour duquel divers éléments d'appareillage électrique sont places La disposition des éléments est réalisée de manière a obtenir une grande compacité et a permettre d'effectuer toutes les opérations d'exploitation en face avant de cellule Toutefois, cette cellule possède un caisson etanche soude dont la fabrication est délicate, car ce caisson possède un décrochement inférieur prévu pour permettre le raccordement des câbles De plus, les conducteurs de liaison entre les éléments disjoncteurs et les éléments sectionneurs ont des formes compliquées et des longueurs relativement importantes du fait des différences de position existant entre les éléments disjoncteurs prévus pour les différentes phases de distribution électrique, qui sont disposes en largeur dans le caisson, et les éléments sectionneurs qui sont disposes en profondeur Ln autre exemple de cellule est fourni par la demande de brevet allemand 29501081 9 Ce document présente une variante a couplage longitudinal comportant un jeu de barres conductrices et une variante a couplage transversal comportant deux jeux de barres Dans ette seconde variante, le positionnement côte a côte des éléments des deux sectionneurs avec un axe principal perpendiculaire a la face avant de la cellule implique la mise en oeuvre d'un caisson etanche différent de celui prévu pour la première variante De plus, les différents conducteurs de liaison ont aussi des formes compliquées et des longueurs relativement grandes qui entraînent une dissipation inutile d'énergie par effet JouleThe invention relates to electrical power distribution cells, medium voltage, having a metal box in which electrical equipment is installed, this equipment including at least one circuit breaker and often a disconnector, the box being designed waterproof and commonly filled with a dielectric shielding gas and the electrical connections between the external connection conductors and the equipment housed in the box being effected by watertight current crossings An example of a medium voltage cell, with a sealed metal box filled with a gas of protection, is in particular provided by the German utility model G94201935 This cell comprises a box in and around which various elements of electrical equipment are placed The arrangement of the elements is carried out so as to obtain a great compactness and to make it possible to carry out all operating operations on the cell front panel However, this cell has a watertight waterproof box, the manufacture of which is delicate, because this box has a lower recess provided to allow the connection of the cables. In addition, the connecting conductors between the circuit breaker elements and the disconnecting elements have complicated shapes and relatively long lengths due to the fact differences in position existing between the circuit breaker elements provided for the different phases of electrical distribution, which are arranged in width in the box, and the disconnecting elements which are arranged in depth Another example of cell is provided by German patent application 29501081 9 This document presents a variant a longitudinal coupling comprising a set of busbars and a transverse coupling variant comprising two sets of ba r res in ette second variant, the side-to-side elements of the two switches with a major axis perpendicular to the front of the he cell involves the implementation of a waterproof box different from that provided for the first variant In addition, the various connecting conductors also have complicated shapes and relatively large lengths which cause unnecessary dissipation of energy by Joule effect
L'invention propose donc une cellule moyenne tension a caisson métallique etanche plus simple de forme qui permet de loger les éléments d appareillage électrique nécessaires a la réalisation de différentes variantes et notamment de cellules a couplage longitudinal ou transversal en un minimum de volume et avec des longueurs minimales de liaisons conductrices entre éléments La cellule électrique selon l'invention comporte un caisson métallique etanche contenant au moins un disjoncteur et un sectionneur triphasés de manière a assurer une interconnexion de barres conductrices externes et/ou de câbles électriques externes individuellement relιe(e)s a l'intérieur du caisson au travers de traversées de courant etanches, le disjoncteur avant des chambres de coupure disposées horizontalement et perpendiculairement a une face avant du caisson au travers de laquelle ce disjoncteur est commande, le sectionneur a au moins deux positions est également commande au travers de ladite face avant et comporte des couteaux mobiles articules chacun sur une pièce porteuse, conductrice et fixe, portée par au moins un support isolant d'une chambre de coupure a un contact mobile de laquelle cette pièce est raccordée Selon une caractéristique de l'invention, le caisson parallelepipedique rectangle et optimalement cubique comporte un sectionneur dont les couteaux mobiles sont orientes au moins a peu près verticalement dans une position, dite de service, pour laquelle ces couteaux sont en contact avec des plots conducteurs qui sont alignes horizontalement en parallèle a la face avant et qui sont situes au-dessus du sectionneur par rapport au disjoncteur au disjoncteur dans le caisson et qui sont relies a des premières traversées de courant etanches portées par une face supérieure du caisson Selon une caractéristique de l'invention, la cellule comporte des premières traversées de courant disposées sur la face supérieure du caisson de manière telle qu'une première traversée de courant centrale soit directement au-dessus du plot et du couteau mobile centraux du sectionneur et que les deux autres premières traversées de courant soient diagonalement alignées par rapport a cette première traversée de courant centrale et soient respectivement reliées chacune a un plot différent par une première barre conductrice individuelle, ces barres, parallèles et disposées orthogonalement par rapport a la face avant, étant positionnées d'une manière symétrique vis-a-vis de la première traversée centrale dans le caisson Selon une caractéristique d'une variante de l'invention, le caisson contient un sectionneur supplémentaire a couteaux mobiles articules chacun sur une pièce conductrice fixe portée par des supports isolants d'une chambre de coupure a un contact de laquelle cette pièce conductrice est raccordée, ces couteaux mobiles étant orientes verticalement dans une position de service pour laquelle ils sont en contact avec des plots conducteurs, alignes horizontalement en parallèle a la face avant, situes au-dessus de ce sectionneur supplémentaire par rapport au disjoncteur dans le caisson et relies a des secondes traversées de courant etanches portées par la face supérieure du caisson, ledit sectionneur supplémentaire étant situe derrière l'autre sectionneur par rapport a la face avant du caissonThe invention therefore proposes a medium-voltage cell with a watertight metal casing which is simpler in shape and which makes it possible to house the electrical equipment elements necessary for the production of different variants, and in particular cells with longitudinal or transverse coupling in minimum volume and with minimum lengths of conductive connections between elements The electrical cell according to the invention comprises a sealed metal box containing at least one three-phase circuit breaker and a disconnector so as to ensure interconnection of external busbars and / or of external electric cables individually connected to the inside of the box at through watertight current bushings, the front circuit breaker of the breaking chambers arranged horizontally and perpendicularly to a front face of the box through which this circuit breaker is controlled, the disconnector at least two positions is also controlled through said front face and comprises movable knives each articulated on a load-bearing, conductive and fixed part, carried by at least one insulating support of an interrupting chamber to a movable contact to which this part is connected. According to a characteristic of the invention, the rectangular parallelepiped box and optimally cubic includes a disconnector whose knives mo biles are oriented at least approximately vertically in a position, called service, for which these knives are in contact with conductive pads which are aligned horizontally in parallel to the front face and which are located above the disconnector relative to the circuit breaker to the circuit breaker in the box and which are connected to first sealed current crossings carried by an upper face of the box According to a characteristic of the invention, the cell comprises first current crossings arranged on the upper face of the box in such a way that a first central current crossing is directly above the central block and movable knife of the disconnector and that the other two first current crossings are diagonally aligned with respect to this first central current crossing and are respectively connected to a different stud by a first individual busbar, these ba rres, parallel and arranged orthogonally to the front face, being positioned symmetrically vis-à-vis the first central passage in the box According to a characteristic of a variant of the invention, the box contains a disconnector additional to movable knives each articulated on a fixed conductive part carried by insulating supports of a breaking chamber to a contact to which this conductive part is connected, these movable knives being oriented vertically in a service position for which they are in contact with conductive pads, aligned horizontally in parallel to the front face, located above this additional disconnector relative to the circuit breaker in the box and connected to second crossings of watertight current carried by the upper face of the box, said additional disconnector being located behind the other disconnector with respect to the front face of the box
Selon une caractéristique d'une variante de l'invention,, dans une position de mise a la terre, les dits couteaux mobiles, au moins approximativement orientes horizontalement, sont en contact chacun avec un plot de mise a la terre porte par une traverse de renfort horizontale disposée centralement entre des parois latérales du caisson au-dessus des chambres de coupure du disjoncteur Selon une caractéristique de l'invention, le caisson comporte un sectionneur dont, en position de sectionnement, les couteaux mobiles sont électriquement isoles des plots relies aux premières traversées de courant et des plots de mise a la terre ou ces couteaux sont bascules a mi-chemin entre les deux positions de service et de mise a la terre Selon une caractéristique d'une variante de l'invention, le caisson comporte des secondes traversées de courant disposées de telle sorte qu'une seconde traversée de courant, dite centrale, soit directement au-dessus du plot et du couteau mobile centraux du sectionneur supplémentaire, que les deux autres secondes traversées de courant soient diagonalement alignées par rapport a cette seconde traversée de courant centrale et soient respectivement reliées chacune a un plot différent par une seconde barre conductrice individuelle, ces deux secondes barres étant positionnées d'une manière symétrique par rapport a la traversée centrale correspondant au plot central du sectionneur supplémentaire dans le caisson Selon une caractéristique d'une variante de l'invention, le sectionneur et le sectionneur supplémentaire ont leurs éléments correspondants disposes a l'alignement et au même niveau horizontal dans le caisson de même que les premières et secondes barres de même phase Selon une caractéristique d'une variante de l'invention, le caisson est muni de tubes cintres unipolaires externes qui se raccordent chacun au caisson au niveau d'orifices ménages dans la partie arrière de la paroi inférieure plane de ce caisson, qui assurent chacun le passage d'un élément conducteur différent, ce dernier pénétrant dans le caisson pour se connecter a une pièce conductrice fixe portée par au moins un support isolant d'une chambre de coupure au contact fixe de laquelle cette pièce est électriquement reliée et qui permettent chacun le raccordement d'au moins un câble électrique unipolaire par l'intermédiaire d'une traversée de courant etanche losee au niveau d'une extrémité du tube qui la contient et orientée horizontalement et vers l'avant du caisson sous lequel les tubes sont positionnesAccording to a characteristic of a variant of the invention, in a grounding position, said movable knives, at least approximately oriented horizontally, are each in contact with a grounding stud carried by a crosspiece of horizontal reinforcement disposed centrally between side walls of the box above the circuit breaker breaking chambers According to one characteristic of the invention, the box comprises a disconnector whose, in the sectioning position, the movable knives are electrically isolated from the pads connected to the first current bushings and earthing studs or these knives are rocked halfway between the two service and earthing positions According to a characteristic of a variant of the invention, the box has second bushings current arranged so that a second current crossing, called central, is directly above the central stud and the movable knife of the additional disconnector, that the other two second current crossings are diagonally aligned with respect to this second central current crossing and are respectively each connected to a different pad by a second individual busbar, these two second bars being positioned in a symmetrical manner With respect to the central bushing corresponding to the central stud of the additional disconnector in the box. According to a characteristic of a variant of the invention, the disconnector and the additional disconnector have their corresponding elements arranged in alignment and at the same horizontal level in the box as well as the first and second bars of the same phase According to a characteristic of a variant of the invention, the box is provided with external unipolar hanger tubes which each connect to the box at the level of household orifices in the rear part of the flat bottom wall of this box, which has each ensures the passage of a different conductive element, the latter penetrating into the box to connect to a fixed conductive part carried by at least one insulating support of an interrupting chamber with fixed contact to which this part is electrically connected and which each allow the connection of at least one unipolar electrical cable via a leaky leaktight current crossing at a end of the tube which contains it and oriented horizontally and towards the front of the box under which the tubes are positioned
Selon une caractéristique d'une variante de l'invention, le caisson est muni de tubes unipolaires droits, externes, qui se raccordent chacun au caisson au niveau d'orifices ménages dans la partie arrière de la paroi inférieure plane de ce caisson, en arrière de ceux prévus pour d'éventuels tubes unipolaires cintres, qui assurent chacun le passage d'un élément conducteur différent pénétrant dans le caisson pour se connecter a une pièce conductrice fixe portée par au moins un support isolant d'une chambre de coupure au contact fixe de laquelle cette pièce est électriquement reliée et qui permettent notamment chacun le raccordement d'une phase d'un transformateur de tension externeAccording to a characteristic of a variant of the invention, the box is provided with straight, external unipolar tubes, which each connect to the box at the level of household orifices in the rear part of the flat bottom wall of this box, behind of those provided for possible single-pole hanger tubes, each of which ensures the passage of a different conductive element penetrating into the box to connect to a fixed conductive part carried by at least one insulating support of an interrupting chamber with fixed contact to which this part is electrically connected and which in particular each allow the connection of a phase of an external voltage transformer
Selon une caractéristique d'une variante de l'invention, le caisson comporte des secondes traversées de courant etanches portées par la face supérieure de ce caisson en arrière des premières traversées de courant dans une disposition identique a celle de celles-ci par rapport a cette la face avant, ces secondes traversées étant respectivement reliées chacune a une des premières traversées par une barre conductrice qui leur est commune et qui est logée a l'intérieur du caisson parallèlement a la face supérieure du caisson, ces barres étant parallèles entre ellesAccording to a characteristic of a variant of the invention, the box comprises second watertight current crossings carried by the upper face of this box behind the first current crossings in an arrangement identical to that of the latter with respect to this the front face, these second crossings being respectively connected each to one of the first crossings by a conductive bar which is common to them and which is housed inside the box parallel to the upper face of the box, these bars being parallel to each other
Selon une caractéristique d'une variante de l'invention, la cellule comporte un caisson dans lequel le sectionneur et le sectionneur supplémentaires sont symétriquement disposes par rapport a un plan passant par les plots de mise a la terre, le sectionneur supplémentaire ayant des couteaux mobiles montes chacun sur une pièce porteuse conductrice fixée sur au moins un support isolant d'une chambre de coupure, les couteaux mobiles du sectionneur supplémentaire étant électriquement relies chacun a un contact fixe d'une des chambres de coupure au contact mobile de laquelle est électriquement relie un couteau mobile du sectionneur loge dans le même caisson Selon une caractéristique d'une variante de l'invention, le caisson comporte un sectionneur supplémentaire ayant des couteaux mobiles qui sont respectivement positionnes chacun avec le couteau mobile de même phase du sectionneur avec lequel il est loge dans le même caisson, sur des pièces porteuses, fixes et conductrices, qui sont fixées sur au moins un support isolant fixe de chambre de coupure et qui sont électriquement reliées entre elles par une liaison qui s'étend dans l'espace existant entre la chambre de coupure auquel le support isolant est affecte et la traverse que comporte le caissonAccording to a characteristic of a variant of the invention, the cell comprises a box in which the disconnector and the additional disconnector are symmetrically arranged with respect to a plane passing through the earthing studs, the additional disconnector having movable knives each mounted on a conductive carrier part fixed on at least one insulating support of a breaking chamber, the movable knives of the additional disconnector being electrically connected each to a fixed contact of one of the breaking chambers to the movable contact to which is electrically connected a movable knife of the disconnector accommodates in the same box According to a characteristic of a variant of the invention, the box comprises an additional disconnector having movable knives which are respectively positioned each with the movable knife of the same phase of the disconnector with which it is housed in the same box, on load-bearing, fixed and conductive parts, which are fixed on at least one fixed insulating support of the breaking chamber and which are electrically connected together by a connection which extends in the space existing between the cut to which the insulating support is affected and the crosspiece contained in the box
Selon une caractéristique d'une variante de l'invention, la cellule comporte un caisson a sectionneur et sectionneur supplémentaire symétriquement disposes par rapport a un plan passant par les plots de mise a la terre, le sectionneur supplémentaire ayant des couteaux mobiles montes chacun sur une pièce porteuse conductrice fixe électriquement reliée a un contact fixe d'une des chambres de coupure par l'intermédiaire d'une pièce conductrice fixe, que porte au moins un support isolant de cette chambre de coupure, et de deux éléments conducteurs relies a des traversées etanches et raccordes entre eux a l'extérieur du caisson par l'intermédiaire d'un conducteur isole et cintre et de connecteurs permettant le montage de transformateurs de courant, de tension a l'extérieur du caisson, la pièce conductrice, un premier des éléments conducteur, le conducteur isole, un second des éléments conducteurs et la pièce conductrice fixe relatifs a un couteau étant électriquement en série dans cet ordreAccording to a characteristic of a variant of the invention, the cell comprises a box with disconnector and additional disconnector symmetrically arranged with respect to a plane passing through the grounding studs, the additional disconnector having movable knives each mounted on a fixed conductive support piece electrically connected to a fixed contact of one of the interrupting chambers by means of a fixed conductive piece, carried by at least one insulating support for this interrupting chamber, and of two conductive elements connected to crossings watertight and connected to each other outside the box through an insulated conductor and hanger and connectors allowing the mounting of current and voltage transformers outside the box, the conductive part, a first of the elements conductor, the conductor insulates, a second of the conductive elements and the fixed conductive part relating to a knife being electrically serial in that order
Selon une caractéristique d'une variante de l'invention, la cellule comporte un caisson dans lequel le sectionneur supplémentaire a des couteaux mobiles qui sont respectivement positionnes chacun avec le couteau mobile de même phase du sectionneur avec lequel il est loge dans le même caisson, sur des pièces porteuses, conductrices, qui sont fixées sur au moins un support fixe et isolant de chambre de coupure et qui sont électriquement reliées entre elles par une liaison qui s'étend dans l'espace existant entre la chambre de coupure auquel le support isolant est affecte et la traverse que comporte le caisson Selon une autre caractéristique de variante de l'invention, le caisson comporte des traversées de courant portées par la face supérieure de ce caisson, prévues pour être raccordées a des lignes aériennes de distribution par l'intermédiaire de conducteurs de liaison unipolaires connectes aux parties externes respectives des traversées de courant, chaque conducteur étant muni d'un manchon elastomere isolant qui le recouvre en extrémité et qui s'emmanche sur la partie externe de la traversée de courant a laquelle est connecte ce conducteurAccording to a characteristic of a variant of the invention, the cell comprises a box in which the additional disconnector has movable knives which are respectively positioned each with the movable knife of the same phase of the disconnector with which it is housed in the same box, on load-bearing, conductive parts, which are fixed on at least one fixed and insulating breaking chamber support and which are electrically connected to each other by a connection which extends in the space existing between the breaking chamber to which the insulating support is affected and the crosspiece that the box comprises According to another variant characteristic of the invention, the box comprises current crossings carried by the upper face of this box, intended to be connected to overhead distribution lines via of unipolar connecting conductors connected to the respective external parts of the current bushings, each conductor being provided with an insulating elastomeric sleeve which covers it at the end and which is fitted on the external part of the current bushing to which this conductor is connected
Selon une caractéristique d'une variante de l'invention, le caisson comporte des traversées de courant prévues pour être raccordées a des lignes aériennes de distribution par l'intermédiaire de conducteurs de liaison unipolaires qui sont équipes de manchons elastomeres isolants et autour lesquels sont montes des transformateurs de courant, de type torique Selon une caractéristique d'une variante de l'invention, le caisson est rempli d'un gaz diélectrique de protectionAccording to a characteristic of a variant of the invention, the box comprises current crossings intended to be connected to overhead distribution lines by means of unipolar connecting conductors which are provided with insulating elastomeric sleeves and around which are mounted current transformers, toroidal type According to a characteristic of a variant of the invention, the box is filled with a dielectric protection gas
L'invention, ses caractéristiques et ses avantages sont précises dans la description qui suit en liaison avec les figures évoquées ci-dessous La figure 1 présente un schéma d'une cellule dite d'arπvee-depart selon l'invention vue latéralement et en coupeThe invention, its characteristics and its advantages are precise in the description which follows in conjunction with the figures mentioned below. Figure 1 presents a diagram of a cell called arπvee-depart according to the invention seen laterally and in section.
La figure 2 présente un schéma de principe partiel d'une variante de cellule d'arπvee-depart supposée vue de dessus et fictivement au travers de la face supérieure du caisson de cette cellule La figure 3 présente un schéma en coupe latérale de la variante de cellule présentée en figure 2FIG. 2 shows a partial block diagram of a variant of departure cell assumed to be seen from above and fictitiously through the upper face of the box of this cell. FIG. 3 presents a diagram in lateral section of the variant of cell shown in figure 2
La figure 4 présente un schéma électrique d'une cellule dite de couplage selon la figure 3Figure 4 shows an electrical diagram of a so-called coupling cell according to Figure 3
La figure 5 présente un schéma d'une cellule d'arπvee-depart a décalage de barres selon l'invention, vue latéralement et en coupeFIG. 5 shows a diagram of a bar shifting start-up cell according to the invention, seen laterally and in section
La figure 6 présente un schéma de principe montrant les raccordements du jeu de barres entre deux cellules d'arπvee-depart par l'intermédiaire d'une cellule de couplage longitudinalFigure 6 shows a block diagram showing the busbar connections between two feeder cells via a longitudinal coupling cell
La figure 7 présente un schéma d'une variante de cellule de couplage longitudinal dotée de transformateurs de mesure, externes, accessibles alors que les barres sont sous tensionFIG. 7 shows a diagram of a variant of a longitudinal coupling cell provided with external measuring transformers accessible while the bars are energized
La figure 8 présente un schéma électrique de la variante de cellule de couplage selon la figure 7FIG. 8 shows an electrical diagram of the variant coupling cell according to FIG. 7
La figure 9 présente un schéma d'une variante de cellule a double jeu de barresFIG. 9 shows a diagram of a variant of a double busbar cubicle
La figure 10 présente un schéma électrique de la variante de cellule a double jeu de barres selon la figure 9FIG. 10 shows an electrical diagram of the variant of double-busbar cubicle according to FIG. 9
La figure 1 1 présente un schéma d'une variante d'agencement de cellule pour usage extérieur a traversées de courant raccordables a des lignes aériennes La figure 12 présente une vue de dessus d'une cellule selon la figure 1 1Figure 1 1 shows a diagram of a variant cell arrangement for outdoor use with current bushings connectable to overhead lines Figure 12 shows a top view of a cell according to Figure 1 1
L'exemple de cellule d'arπvee-depart triphasée présente sur la figure 1 comporte un caisson 1 de forme parallelepipedique rectangle, optimalement cubique, réalise de manière connue de l'homme de métier pour être etancheThe example of a three-phase start-up cell shown in FIG. 1 comprises a box 1 of rectangular parallelepiped shape, optimally cubic, produced in a manner known to those skilled in the art to be waterproof
Ce caisson 1 , ici suppose en tôle métallique, est prévu pour contenir divers éléments d'appareillage électrique dont notamment les éléments d'au moins un disjoncteur ayant trois pôles dont les axes respectifs sont orientes perpendiculairement a une des parois du caisson destinée a constituer la face avant de la cellule, cette paroi étant ici référencée FAThis box 1, here assumes sheet metal, is designed to contain various elements of electrical equipment including in particular the elements of at least one circuit breaker having three poles whose respective axes are oriented perpendicular to one of the walls of the box intended to constitute the front face of the cell, this wall being here referenced FA
Les pôles sont disposes côte a côte dans un plan horizontal, ils sont ici supposes alignes derrière celui qui est symbolise par une de ses trois chambres de coupure 2 Ces chambres sont par exemple de type chambre de coupure sous vide ou chambre remplie d'un gaz diélectrique de protection, tel que du SF6The poles are arranged side by side in a horizontal plane, they are here assumed to be aligned behind that which is symbolized by one of its three interrupting chambers 2 These chambers are for example of the vacuum interrupting chamber type or chamber filled with a gas protective dielectric, such as SF6
Ln mécanisme de manoeuvre 3 du disjoncteur est positionne en avant du caisson II comporte au moins une bielle de manoeuvre 4 qui passe au travers de la face avant FA par un dispositif de traversée etanche 5 et qui commande les chambres de coupure 2 Ces dernières sont portées par des supports isolants 6 qui sont fixes a l'intérieur du caisson 1 sur la paroi constituant la face avant FAAn operating mechanism 3 of the circuit breaker is positioned in front of the box II comprises at least one operating connecting rod 4 which passes through the front face FA by a sealed crossing device 5 and which controls the breaking chambers 2 The latter are worn by insulating supports 6 which are fixed inside the box 1 on the wall constituting the front face FA
Le caisson 1 est aussi prévu pour pouvoir contenir les éléments d'au moins un sectionneur ici suppose a trois positions qui prend place au-dessus des pôles du disjoncteur Ce sectionneur comporte trois paires de couteaux de contact mobiles 7 qui sont directement articules chacun sur une pièce porteuse 8, conductrice et fixe, montée sur les supports isolants 6 d'une chambre de coupure 2 au contact mobile de laquelle cette pièce 8 est électriquement raccordée bn seul des couteaux est ici représenteThe box 1 is also designed to be able to contain the elements of at least one disconnector here assumes a three position which takes place above the poles of the circuit breaker This disconnector comprises three pairs of movable contact knives 7 which are directly articulated each on a carrier piece 8, conductive and fixed, mounted on the insulating supports 6 of a breaking chamber 2 in mobile contact of which this piece 8 is electrically connected bn only knives is shown here
Dans une position, dite de service, les trois couteaux mobiles 7 sont en contact avec trois plots conducteurs 9 que portent des barres conductrices 10 disposées sous la paroi constituant la face supérieure FS de la cellule Ces barres 10 sont ici rectilignes et s'étendent perpendiculairement a la face avant FA du caisson Elles sont positionnées au-dessus du sectionneur par rapport au disjoncteur dans ce caisson Les couteaux sont par exemple orientes verticalement, comme représente en pointilléIn a so-called service position, the three movable knives 7 are in contact with three conductive pads 9 carried by conductive bars 10 disposed under the wall constituting the upper face FS of the cell. These bars 10 are here rectilinear and extend perpendicularly. on the front face FA of the box They are positioned above the disconnector relative to the circuit breaker in this box The knives are for example oriented vertically, as shown in dotted lines
Dans une position, dite de sectionnement, les couteaux mobiles 7 sont éloignes des plots 9 de sorte que des distances de sectionnement suffisantes entre couteaux et plots 9 soient respectées Dans cette position, les couteaux sont par exemple bascules a mi-chemin entre la position évoquée ci-dessus et celle qui est décrite ci-dessousIn a so-called sectioning position, the movable knives 7 are moved away from the studs 9 so that sufficient sectioning distances between knives and studs 9 are respected. In this position, the knives are for example tilted halfway between the mentioned position. above and the one described below
Dans cette position, dite de mise a la terre, les couteaux mobiles 7 sont en contact avec trois plots conducteurs 1 1 qui sont relies a un collecteur de terre du caisson, un seul de ces plots étant représente Chaque couteau mobile est par exemple oriente au moins a peu près horizontalement, comme représente en trait plein Comme connu, les couteaux mobiles 7 sont actionnes par un mécanisme de commande 12 extérieur au caisson 1 Une tige de manoeuvre 13 du mécanisme de commande passe au travers de la face avant FA par un dispositif de traversée etanche 5A identique ou similaire au dispositif de traversée etanche 5 évoque plus haut Cette tige agit sur un mécanisme comportant un arbre 1 5, des leviers 16 et des bielles isolantes 16A La tige de manoeuvre 13 agit sur un levier qui fait partiellement tourner l'arbre 15 Ce dernier entraîne trois leviers qui commandent individuellement le passage des couteaux mobiles 7 d'une position a l'autre par l'intermédiaire des bielles isolantes Dans l'exemple présente, l'arbre 15 est porte par des paliers 18 fixes sur la paroi de la face avant FA a l'intérieur du caisson 1 Un seul des paliers 1 8 est ici représenteIn this position, called grounding, the movable knives 7 are in contact with three conductive pads 1 1 which are connected to an earth collector of the box, only one of these pads being represented. Each movable knife is for example oriented at less roughly horizontally, as shown in solid lines As known, the movable knives 7 are actuated by a control mechanism 12 outside the box 1 An operating rod 13 of the control mechanism passes through the front face FA by a sealed crossing device 5A identical or similar to the crossing device waterproof 5 mentioned above This rod acts on a mechanism comprising a shaft 1 5, levers 16 and insulating rods 16A The operating rod 13 acts on a lever which partially rotates the shaft 15 The latter drives three levers which control individually the passage of the movable knives 7 from one position to the other by means of the insulating rods In the present example, the shaft 15 is carried by bearings 18 fixed on the wall of the front face FA inside of the casing 1 Only one of the stages 1 8 is here represents
Dans une forme préférée de réalisation, les plots 1 1 de mise a la terre sont portes par un même support qui est par exemple une traverse métallique 3 1 positionnée en partie centrale du caisson, entre les deux parois latérales de ce dernier cette traverse servant aussi de renfort et permettant d'améliorer la tenue en pression ou éventuellement dépression de la cellule Les barres conductrices 10 sont destinées a être reliées a des conducteurs triphasés externes A, B, C situes a l'extérieur du caisson par l'intermédiaire de traversées de courant 17 A, 17B, 17C que porte la paroi constituant la face supérieure FS de ce caisson Chaque traversée de courant porte une barre 10 qu'elle est ici supposée relier a un conducteur externe, par exemple par un connecteur 14A, 14B ou 14C Ce conducteur externe est par exemple une des barres conductrices d'un jeu triphasé de barres situe a l'extérieur et au-dessus du caissonIn a preferred embodiment, the studs 1 1 for earthing are carried by the same support which is for example a metal cross member 3 1 positioned in the central part of the box, between the two side walls of the latter this cross member also serving reinforcement and making it possible to improve the pressure resistance or possibly depression of the cell The conductive bars 10 are intended to be connected to external three-phase conductors A, B, C located outside the box by means of crossings of current 17 A, 17B, 17C carried by the wall constituting the upper face FS of this box Each current crossing carries a bar 10 which it is here supposed to connect to an external conductor, for example by a connector 14A, 14B or 14C Ce external conductor is for example one of the conductive bars of a three-phase set of bars located outside and above the box
Dans l'exemple de réalisation propose et ainsi que le montre la figure 2, les trois traversées de courant 17 A, 17B, 17C portées par le caisson 1 sont disposées en diagonale, par rapport a la face avant FA sur la face supérieure FS d'allure rectangulaire et preferablement carrée de ce caisson, de manière que la traversée de courant de la phase centrale référencée 17C soit directement au-dessus du plot 9 correspondant ainsi que du couteau mobile 7 correspondant, lorsque ce dernier est en position de service ainsi que le montre la figure 1 Les deux autres traversées de courant 17A, 17B, diagonalement alignées de part et d'autre de la traversée de courant de phase centrale 17C, sont alors reliées aux plots 9 qui leur correspondent Les liaisons correspondantes sont assurées par les barres conductrices 10 qui sont identiques et positionnées d'une manière symétrique par rapport a la traversée de phase centrale 17C et au plot 9 correspondant dans le caisson 1 Dans une forme préférée de réalisation, l'ensemble forme par les éléments fonctionnels contenus dans le caisson 1 entre sectionneur et traversées de courant, tels que décrits jusqu'ici, est loge dans la partie supérieure avant du caisson, cette partie correspondant approximativement au quart de ce caisson Par ailleurs et ainsi que le montre la figure 1, des tubes cintres unipolaires externes 19, dont un seul est représente sur la figure 1 , v iennent se raccorder chacun par une première extrémité au niveau d'orifices ménages dans la partie arrière de la paroi inférieure plane FI du caisson 1 Ces tubes permettent chacun le passage d'un élément conducteur cintre 20, différent, pénétrant dans le caisson pour se connecter a une pièce conductrice fixe 21 portée par les supports isolants 6 d'une chambre de coupure 2 au contact fixe de laquelle cette pièce 21 est électriquement reliée La seconde extrémité des tubes unipolaires 19 est reliée a une traversée de courant etanche 22 ici supposée a axe horizontal Chaque traversée etanche 22 est ici prévue pour permettre un raccordement par l'avant d'un ou de plusieurs câbles électriques unipolaires 0 par phase, ce raccordement s'effectuant au moven de connecteurs connus en eux-mêmes Les secondes extrémités des tubes unipolaires 19 comportent éventuellement une portion ici prévue horizontale permettant de recevoir des transformateurs de courant 23, externes et de type toriqueIn the exemplary embodiment proposed and as shown in FIG. 2, the three current crossings 17 A, 17B, 17C carried by the casing 1 are arranged diagonally, with respect to the front face FA on the upper face FS d 'rectangular and preferably square shape of this box, so that the current crossing of the central phase referenced 17C is directly above the corresponding stud 9 as well as the corresponding movable knife 7, when the latter is in the service position as well as as shown in Figure 1 The two other current crossings 17A, 17B, diagonally aligned on either side of the central phase current crossing 17C, are then connected to the pads 9 which correspond to them The corresponding connections are provided by the bars conductive 10 which are identical and positioned symmetrically with respect to the central phase bushing 17C and to the corresponding stud 9 in the box 1 In a preferred embodiment, the assembly forms by the functional elements contained in the box 1 between disconnector and bushings current, as described so far, is housed in the upper front part of the box, this part corresponding approximately to a quarter of this box Furthermore and as shown in Figure 1, external single-pole hanger tubes 19, of which only one is represented in FIG. 1, each is connected by a first end at the level of household orifices in the rear part of the flat bottom wall FI of the box 1 These tubes each allow the passage of a conductive element hanger 20, different , entering the box to connect to a fixed conductive part 21 carried by the insulating supports 6 of a breaking chamber 2 at the co ntact fixed from which this part 21 is electrically connected The second end of the unipolar tubes 19 is connected to a waterproof current bushing 22 here assumed to have a horizontal axis Each waterproof bushing 22 is here provided to allow connection from the front of one or of several unipolar electrical cables 0 per phase, this connection being made to the moven of connectors known per se The second ends of the unipolar tubes 19 possibly include a portion here provided horizontal making it possible to receive current transformers 23, external and of the type toric
Par ailleurs dans une variante de réalisation également proposée sur la figure 1 des tubes unipolaires externes 24 sont susceptibles de venir se raccorder chacun par une première extrémité au niveau d'orifices ménages dans la paroi inférieure plane FI du caisson 1 en arrière de ceux ménages pour les tubes unipolaires externes 19 si ceux-ci sont prévus Ces tubes 24 qui sont ici supposes droits permettent chacun le passage d'un élément conducteur 25 différent qui pénètre dans le caisson pour se connecter a une pièce conductrice fixe 21 d'une des chambres de coupure 2 La seconde extrémité de chacun des tubes unipolaires 24 est munie d'une traversée de courant etanche 26 ici montrée verticale Chaque traversée etanche 26 est ici supposée prévue pour permettre un raccordement d'au moins un élément de raccordement 27 en T prévu pour le raccordement d'un transformateur de tension externe 28 Un exemple de cellule de couplage développée a partir d'une cellule telle qu'évoquée ci-dessus et comportant un sectionneur supplémentaire est présente en figure 3 , il permet par exemple de réaliser un agencement selon un schéma électrique présente sur la figure 4Furthermore, in an alternative embodiment also proposed in FIG. 1, external unipolar tubes 24 are capable of being connected each by a first end at the level of household orifices in the flat bottom wall FI of the box 1 behind those household for the external unipolar tubes 19 if these are provided These tubes 24 which are here assumed to be straight each allow the passage of a different conductive element 25 which penetrates into the box to connect to a fixed conductive part 21 of one of the cut-off 2 The second end of each of the unipolar tubes 24 is provided with a watertight current bushing 26 here shown vertical Each watertight bushing 26 is here supposed to be provided to allow a connection of at least one connection element 27 in T provided for the connection of an external voltage transformer 28 An example of a coupling cell developed from a cell such as evoked above and comprising an additional disconnector is shown in Figure 3, it allows for example to make an arrangement according to an electrical diagram shown in Figure 4
Un tel agencement permet de réaliser un couplage longitudinal entre un jeu de conducteurs externes triphasés A, B, C connectes aux traversées de courant 17A 1 7B, 17C et un jeu de conducteurs externes triphasés A , B', C connectes a des traversées de courant 17'A, 17'B et 17'C disposées en arrière des précédentes en face supérieure du caisson 1 ' Le couplage s'effectue ici par 1 intermédiaire d'une succession d'éléments comportant un sectionneur a couteaux mobiles 7 et un disjoncteur a chambres de coupure 2, l'un et l'autre analogues a ceux prévus sur la figure 1 , ainsi que d'un sectionneur supplémentaire a couteaux mobiles 7' Dans la pratique, ce sectionneur supplémentaire a ses couteaux mobiles 7' respectivement positionnes chacun entre un contact fixe d'une des chambres de coupure 2 et une des barres conductrices 10' ainsi que le montre la figure 3 Selon une forme préférée de réalisation présentée sur la figure 3, le sectionneur supplémentaire qui est inclus dans le caisson 1 ' d'une cellule analogue a celle précédemment détaillée est aussi un sectionneur a trois positions qui est identique au sectionneur a couteaux mobiles 7 Ces deux sectionneurs sont symétriquement disposes par rapport a un plan vertical, non représente et suppose passant par les plots 1 1 de mise a la terre, ce plan étant parallèle a la face avant FA du caissonSuch an arrangement allows longitudinal coupling between a set of three-phase external conductors A, B, C connected to the current bushings 17A 17B, 17C and a set of three-phase external conductors A, B ', C connected to the current bushings 17'A, 17'B and 17'C arranged behind the previous ones on the upper face of the box 1 'The coupling is carried out here by 1 through a succession of elements comprising a movable knife disconnector 7 and a circuit breaker a breaking chambers 2, both analogous to those provided in FIG. 1, as well as an additional disconnector with movable knives 7 'In practice, this additional disconnector has its movable knives 7' each positioned respectively between a fixed contact of one of the breaking chambers 2 and one of the conductive bars 10 ′ as shown in FIG. 3 According to a preferred embodiment presented in FIG. 3, the additional disconnector which is included in the box 1 ′ of a cell similar to that previously detailed is also a three-position disconnector which is identical to the movable knife disconnector 7 These two disconnectors are symmetrically arranged with respect to a vertical plane, not shown and supposed to pass through the 1 1 earthing studs, this plane being parallel to the front face FA of the box
Les couteaux mobiles 7' du sectionneur supplémentaire sont articules chacun sur une pièce porteuse 8', fixe et conductrice, elle-même portée par les supports isolants 6 d'une des chambres de coupure 2 au contact fixe de laquelle cette pièce porteuse 8', est électriquement raccordée dans le caisson En position de service, les trois couteaux mobiles 7' sont en contact avec trois plots conducteurs 9' que portent des barres conductrices 10' situées au-dessus du sectionneur supplémentaire dans le caisson Ces couteaux sont par exemple orientes verticalement, comme représente en pointillé En position de mise a la terre, les couteaux mobiles 7' sont en contact chacun avec un plot relie au collecteur de terre du caisson Dans la réalisation présentée, ou les sectionneurs sont symétriquement installes par rapport a un plan vertical médian du caisson qui est suppose parallèle a la paroi constituant la face avant FA, les plots relies a la terre sont les plots 1 1 qui peuvent simultanément recevoir les couteaux 7 et 7' des deux sectionneursThe movable knives 7 ′ of the additional disconnector are each articulated on a support piece 8 ′, fixed and conductive, itself carried by the insulating supports 6 of one of the interrupting chambers 2 in fixed contact with which this support piece 8 ′, is electrically connected in the box In the service position, the three movable knives 7 'are in contact with three conductive pads 9' which are carried by conductive bars 10 'situated above the additional disconnector in the box These knives are for example oriented vertically , as shown in dotted lines In the earthing position, the movable knives 7 'are each in contact with a stud connected to the earth collector of the box. In the embodiment shown, where the disconnectors are symmetrically installed with respect to a median vertical plane of the box which is assumed to be parallel to the wall constituting the front face FA, the pads connected to the ground are the pads 1 1 which can simultaneously also receive knives 7 and 7 'from the two disconnectors
Chaque couteau mobile est par exemple oriente au moins a peu près horizontalement, comme représente en trait plein En position de sectionnement, les couteaux mobiles 7 sont par exemple bascules a mi-chemin entre les deux positions évoquées ci-dessus Le sectionneur supplémentaire comporte un mécanisme de commande propre qui est extérieur au caisson 1 ' de même que le mécanisme de commande 12 a côte duquel il est situe en avant dudit caisson Ce mécanisme comporte une tige de manoeuvre 13', partiellement représentée qui passe au travers de la face avant FA par un dispositif de traversée etanche identique ou similaire au dispositif de traversée etanche 5 évoque plus haut, de manière a longer un des parois latérales du caisson et a s'articuler sur un des leviers 16' d'un mécanisme de transmission de mouvement par leviers 16' et bielles isolantes 16'A analogue au mécanisme a leviers 16 et bielles 16A Les leviers 16' sont portes par un arbre rotatif 15' et trois d'entre eux sont relies aux couteaux 9' par l'intermédiaire de trois bielles isolantes 16' , pour assurer les déplacements des couteaux mobiles 7 entre les positions évoquées ci-dessus L'arbre 15' est porte par des paliers 18' fixes sur la paroi qui est a l'oppose de la face avant FA dans le caissonEach movable knife is for example oriented at least approximately horizontally, as shown in solid lines In the sectioning position, the movable knives 7 are, for example, tilting halfway between the two positions mentioned above. The additional disconnector has a specific control mechanism which is external to the box 1 ', as does the control mechanism 12 a side of which it is located in front of said box This mechanism comprises an operating rod 13 ′, partially shown which passes through the front face FA by a waterproof crossing device identical or similar to the waterproof crossing device 5 mentioned above, from so as to go along one of the side walls of the box and to be articulated on one of the levers 16 'of a movement transmission mechanism by levers 16' and insulating rods 16'A similar to the mechanism with levers 16 and rods 16A The levers 16 'are carried by a rotary shaft 15' and three of them are connected to the knives 9 'by means of three insulating connecting rods 16', to ensure the movements of s movable knives 7 between the positions mentioned above The shaft 15 'is carried by bearings 18' fixed on the wall which is opposite the front face FA in the box
Les barres conductrices 10' sont destinées a être reliées a des conducteurs, situes a l'extérieur du caisson, par l'intermédiaire des traversées de courant 17'A, 1 7'B, 17C portées par la paroi constituant la face supérieure FS de ce caisson Chaque traversée de courant 17'A, 17'B, 17'C permet de relier une barre conductrice 10' située a l'intérieur du caisson a un conducteur de liaison externe différent A', B' ou C situe a l'extérieur et au-dessus dudit caisson Dans l'exemple présente en figure 3 des connecteurs 14' A, 14'B et 14'C sont prévus pour assurer ces liaisons et pour permettre leur éventuelle déconnexionThe conductive bars 10 ′ are intended to be connected to conductors, located outside the box, by means of current crossings 17 ′ A, 17 ′ B, 17 C carried by the wall constituting the upper face FS of this box Each current crossing 17'A, 17'B, 17'C makes it possible to connect a conductive bar 10 'located inside the box to a different external connection conductor A', B 'or C located at outside and above said box In the example presented in FIG. 3, connectors 14 ′ A, 14 ′ B and 14 ′ C are provided to ensure these connections and to allow their possible disconnection
Comme montre sur la figure 2, les trois traversées de courant 17'A, 17'B, 17'C sont prévues disposées en diagonale sur la face supérieure FS de ce caisson, de même que les traversées 17 A, 17B, 17C La traversée de courant 17'C de la phase centrale est positionnée directement au-dessus du plot 9' correspondant ainsi que du couteau mobile 7 correspondant, lorsque ce dernier est en position de service Les deux autres traversées de courant diagonalement alignées de part et d'autre de la traversée de courant de phase centrale sont alors reliées aux plots 9' qui leur correspondent Les liaisons correspondantes sont assurées par les barres 10' positionnées de manière symétrique par rapport au plan vertical qui passe par les traversées de phase centrale 17C et 17'C et les plot 9 et 9' et qui est perpendiculaire au plan que définit la face avant FA Dans une forme préférée de réalisation, l'ensemble forme par les éléments fonctionnels contenus dans le caisson 1 entre sectionneur supplémentaire et traversées de courant 17'A, 17'B, 17'C, tels que décrits jusqu'ici, est loge dans la partie supérieure arrière du caisson, cette partie correspondant au moins approximativement elle aussi a un quart de ce caisson II est a noter que dans cet exemple de réalisation les liaisons électriques entre barres conductrices externes via les sectionneurs et le disjoncteur sont susceptibles d'être particulièrement courtes Une variante de cellule d'arrivee-depart a caisson 1 " est présentée en figure 5 elle est st développée a partir d'une cellule d'arrivee-depart a caisson 1 présentée en figure 1 Toutefois, elle s'en différencie dans la mesure ou elle comporte trois traversées de courant supplémentaires en plus des trois traversées de courant 17A, 17B, 17C disposées en diagonale, par rapport a la face avant FA du caisson Les trois traversées de courant supplémentaires 17' A, 17'B et 17'C sont disposées en arrière des précédentes en face supérieure du caisson 1 ", comme celles d'une cellule a caisson 1 ' telle que montrée en figure 3As shown in Figure 2, the three current bushings 17'A, 17'B, 17'C are provided arranged diagonally on the upper face FS of this box, as are the bushings 17 A, 17B, 17C The bushing current 17'C of the central phase is positioned directly above the corresponding stud 9 'as well as the corresponding movable knife 7, when the latter is in the operating position The other two current crossings diagonally aligned on either side of the central phase current crossing are then connected to the pads 9 'which correspond to them The corresponding connections are provided by the bars 10' positioned symmetrically with respect to the vertical plane which passes through the central phase bushings 17C and 17'C and the studs 9 and 9 'and which is perpendicular to the plane defined by the front face FA In a preferred embodiment, the assembly formed by the functional elements contained in the box 1 between additional disconnector and current crossings 17'A, 17'B, 17'C, as described so far, is housed in the rear upper part of the box, this part also corresponding at least approximately to a quarter of this box It should be noted that in this embodiment the electrical connections between external busbars via the disconnectors and the circuit breaker are likely to be particularly short A variant of arrival-departure cell with box 1 "is presented in FIG. 5 it is developed from a arrival-departure cell with caisson 1 presented in FIG. 1 However, it differs in measurement or it has three additional current bushings in addition to the three current bushings 17A, 17B, 17C arranged diagonally, with respect to the front face FA of the box Les three additional current crossings 17 ′ A, 17 ′ B and 17 ′ C are arranged behind the previous ones on the upper face of the box 1 ", like those of a box cell 1 ′ as shown in FIG. 3
L a liaison entre deux traversées de courant relatives a une même phase, telles 17A et 1 7A' est assurée par une barre conductrice rectihgne, dite de décalage 10" fixée aux deux traversées de courant a l'intérieur du caisson 1 ", les trois barres de décalage 10" étant identiques et parallèles entre elles a proximité de la face supérieure FSThe connection between two current crossings relating to the same phase, such as 17A and 17A 'is ensured by a straight conductor bar, called a 10 "offset bar fixed to the two current crossings inside the 1" box, the three 10 "shift bars being identical and parallel to each other near the upper face FS
Dans l'exemple présente sur la figure 5, des tubes cintres unipolaires externes 19 viennent se raccorder au niveau d'orifices ménages dans la partie arrière de la paroi inférieure plane FI du caisson Id'une manière analogue a celle prévue au niveau de la cellule présentée en figure 1In the example shown in FIG. 5, external unipolar hanger tubes 19 are connected at the level of household orifices in the rear part of the flat bottom wall FI of the box Id 'in a manner similar to that provided at the level of the cell presented in figure 1
La figure 6 montre un exemple de raccordement entre deux cellules d'arrivee- depart a caissons l et 1 " par l'intermédiaire d'une cellule de couplage a caisson 1 ' alignée entre elles La cellule d'arrivee-depart a caisson 1 est supposée identique a celle présentée en figure 1FIG. 6 shows an example of connection between two inlet and outlet cells with boxes 1 and 1 "by means of a box coupling cell 1 'aligned with one another The inlet and outlet cells with box 1 is assumed identical to that presented in figure 1
La cellule de couplage a caisson 1 ' est supposée identique a celle présentée en figure 3 La cellule d'arrivee-depart a caisson 1 " est supposée identique a celle présentée en figure 5The box coupling cell 1 ′ is assumed to be identical to that shown in FIG. 3 The arrival-departure cell with box 1 "is assumed to be identical to that presented in FIG. 5
Comme le montre la figure 6, les caissons d'arπvee-depart 1 et 1 " reçoivent chacun un jeu différent de conducteurs externes triphasés références A, B, C pour l'un et A', B', C pour l autre Dans la réalisation proposée les conducteurs des deux jeux sont parallèles entre eux et a la face avant des caissons dans chaque jeu et alignes deux a deux d'un jeu a l'autre Ils sont de plus respectivement relies aux traversées de courant 17A, 17B 17C situes a proximité de la face avant du caisson ou ils aboutissentAs shown in Figure 6, the arπvee-depart boxes 1 and 1 "each receive a different set of three-phase external conductors references A, B, C for one and A ', B', C for the other In the proposed embodiment the conductors of the two sets are parallel to each other and to the front face of the boxes in each set and aligned two by two from one set to the other They are also respectively connected to the current bushings 17A, 17B 17C located near the front face of the box or they terminate
Dans l'exemple présente cette liaison entre un conducteur externe triphasé et une traversée de courant est supposée- réalisée par un connecteur, tels les connecteurs en croix références 14A, 14B, 14C pour les conducteurs A, B, C aboutissant au caisson 1 Les caissons 1 , 1 " des cellules d'arrivee-depart sont respectivement relies au caisson 1 ' de la cellule de couplage par des barres conductrices intermédiaires qui sont preferablement identiques, ces barres isolées et externes étant référencées AI, BI, CI entre caissons 1 et 1 ' et AI', BI, CI' entre caissons 1 ' et 1 ' Des connecteurs assurent la connexion des barres intermédiaires aux traversées de courant qu'elles unissent, tels les connecteurs références 14A1 , 14B 1 , 14C 1 au niveau du caisson 1 ' pour les barres intermédiaires AI, BI, CI reliant ce caisson au caisson 1In the example presented this connection between an external three-phase conductor and a current crossing is assumed to be carried out by a connector, such as the cross connectors references 14A, 14B, 14C for conductors A, B, C leading to the box 1 The boxes 1, 1 "of the arrival-departure cells are respectively connected to the box 1 'of the coupling cell by intermediate conductive bars which are preferably identical, these isolated and external bars being referenced AI, BI, CI between boxes 1 and 1 'and AI', BI, CI 'between boxes 1' and 1 'Connectors provide the connection of the intermediate bars to the current bushings which they unite, such as connectors references 14A1, 14B 1, 14C 1 at the level of box 1' for intermediate bars AI, BI, CI connecting this box to box 1
La fonction de couplage d'un jeu de conducteurs externes triphasés est ainsi réalisée a l'aide d'une seule cellule de couplage composée a l'aide d'éléments standardises, tels que le disjoncteur, les sectionneurs et les barresThe coupling function of a set of three-phase external conductors is thus achieved using a single coupling cell composed using standardized elements, such as the circuit breaker, disconnectors and bars
La cellule d'arrivee-depart a caisson 1 " remplit la même fonction qu'une cellule d'arrivée départ 1 , c'est-a-dire qu'elle permet l'alimentation d'un départ par câbles a partir d'un jeu de conducteurs externes par l'intermédiaire d'un disjoncteur et d'un sectionneur Elle permet de plus de compenser simplement a l'aide de barres 10" le décalage entre traversées de courant de même phase qu'introduit le caisson de la cellule de couplage 1 'The 1 "box arrival-departure cell fulfills the same function as a departure 1 arrival cell, that is to say it allows the supply of a cable departure from a set of external conductors via a circuit breaker and a disconnector It also makes it possible to compensate simply by means of 10 "bars the offset between current crossings of the same phase as introduced by the box of the cubicle 1 'coupling
Un autre exemple de caisson de cellule de couplage l 'D est présente en figure 7, il permet de réaliser un agencement selon un schéma électrique tel que montre sur la figure 8 Cette cellule est développée a partir d'une cellule de couplage a caisson 1 ' telle qu'évoquée plus haut, elle est dotée d'une liaison conductrice externe permettant de relier les contacts fixes des chambres de coupure 2 aux pièces porteuses conductrices 8" des couteaux mobiles 7' du sectionneur supplémentaire Cette liaison externe est ici équipée de transformateurs de courant 23 et de tension 28, externes au caisson Ces transformateurs sont susceptibles d'être atteints et notamment démontes, si besoin est, lorsque des barres de la cellule sont sous tension Le couplage y est réalise par l'intermédiaire d'un sectionneur a couteaux mobiles 7, d'un disjoncteur a chambres de coupure 2 et d'un sectionneur a couteaux mobiles 7'Another example of a coupling cell box D is shown in FIG. 7, it allows an arrangement to be made according to an electrical diagram as shown in FIG. 8 This cell is developed from a coupling cell with a box 1 'as mentioned above, it is provided with an external conductive connection making it possible to connect the fixed contacts of the interrupting chambers 2 to the conductive carrying parts 8 "of the movable knives 7' of the additional disconnector This external connection is here equipped with transformers current 23 and voltage 28, external to the box These transformers are liable to be affected and in particular dismantled, if necessary, when the busbars are energized The coupling is carried out by means of a movable knife disconnector 7, a circuit breaker with breaking chambers 2 and a movable knife disconnector 7 '
Les couteaux mobiles 7' du sectionneur supplémentaire sont ici articules chacun sur une pièce porteuse conductrice 8", dite auxiliaire, légèrement différente des pièces porteuses 8, 8' Cette pièce porteuse auxiliaire 8" est ici fixée sur des supports isolants supplémentaires 6" portes par une pièce conductrice fixe 21 , identique a celle prévue dans la cellule présentée en figure 1 La pièce 21 est fixée sur les supports isolants 6 du contact fixe d'une chambre de coupure 2 de manière identique Chaque pièce porteuse auxiliaire 8" est reliée a un élément conducteur 25The movable knives 7 ′ of the additional disconnector are here each articulated on a conductive carrying part 8 ", called auxiliary, slightly different from the carrying parts 8, 8 'This auxiliary carrying part 8" is here fixed on additional insulating supports 6 "doors by a fixed conductive part 21, identical to that provided in the cell presented in FIG. 1 The part 21 is fixed on the insulating supports 6 of the fixed contact of a breaking chamber 2 in an identical manner Each auxiliary carrier part 8 "is connected to a conductive element 25
Des tubes cintres unipolaires externes 19, analogues a celui représente sur la figure 1 viennent se raccorder chacun par une première extrémité au niveau d'orifices ménages dans la partie arrière de la paroi inférieure plane du caisson l 'D Ces tubes contiennent chacun un élément conducteur cintre 20, qui pénètre dans le caisson pour se connecter par une première extrémité a une pièce conductrice fixe 21 reliée au contact fixe d'une chambre de coupure 2, comme précédemment Une seconde extrémité de chaque tube cintre unipolaire 24 est munie d'une traversée etanche 22 qui reçoit un connecteur 29 en T, de type connu Une barre conductrice 30, gainée d'isolant et montée extérieurement au caisson, permet de relier chaque élément conducteur 20 a celui des éléments conducteurs 25 qui correspond a la même phase dans le caisson Chaque barre conductrice 30 est ici reliée a deux traversées de courant 20 et 26 relatives a une même phase par deux connecteurs 27 et 29, par exemple au niveau des prises médianes de ces derniersExternal single-pole hanger tubes 19, similar to that shown in FIG. 1, are each connected by a first end at the level of household orifices in the rear part of the plane lower wall of the box. These tubes each contain a conductive element. hanger 20, which penetrates into the box to connect by a first end to a fixed conductive part 21 connected to the fixed contact of a breaking chamber 2, as previously A second end of each single-pole hanger tube 24 is provided with a bushing waterproof 22 which receives a T-connector 29, of known type A conductive bar 30, sheathed in insulation and mounted externally to the box, makes it possible to connect each conducting element 20 to that of the conducting elements 25 which corresponds to the same phase in the box Each busbar 30 is here connected to two current crossings 20 and 26 relating to the same phase by two connectors 27 and 29 , for example at the median sockets of the latter
Dans la réalisation proposée, les connecteurs 27 sont positionnes verticalement avec leurs prises médianes respectives orientées vers l'avant et les connecteurs 29 sont positionnes horizontalement avec leurs prises médianes respectives orientées vers le bas et les barres conductrices 30, qui sont coudées, sont montées chacune entre les prises médianes respectives de deux connecteurs 27, 29 relatifs a une même phase Des transformateurs de courant 23 et des transformateurs de tension 28 sont associes aux différents éléments conducteurs 20 et 25, de la même manière que dans le cas de la cellule a caisson 1 présentée en figure 1 Ils permettent respectivement une mesure du courant passant par les barres conductrices 30 et de la tension au niveau de ces barresIn the proposed embodiment, the connectors 27 are positioned vertically with their respective center sockets facing forward and the connectors 29 are positioned horizontally with their respective center sockets facing downwards and the busbars 30, which are bent, are each mounted between the respective center taps of two connectors 27, 29 relating to the same phase Current transformers 23 and voltage transformers 28 are associated with the various conducting elements 20 and 25, in the same way as in the case of the box cell 1 presented in figure 1 They allow respectively a measurement of the current passing through the busbars 30 and of the voltage at these bars
A partir du moment ou les deux sectionneurs contenus dans le caisson d'une cellule telle que présentée sur la figure 7 sont simultanément en position de mise a la terre, il est possible d'accéder aux transformateurs 23 et 28 associes a ce caisson, alors que les barres conductrices externes A, B, C et/ou A', B', C auxquelles la cellule est reliée sont sous tension II est en particulier possible de démonter les transformateurs de courant 23 , après déconnexion barres conductrices 30 et des connecteurs 29 Une variante supplémentaire de cellule a double jeu de barres est présentée en figure 9, elle permet de réaliser un agencement selon le schéma électrique présente sur la figure 10From the moment when the two disconnectors contained in the box of a cell as shown in FIG. 7 are simultaneously in the earthing position, it is possible to access the transformers 23 and 28 associated with this box, then that the external busbars A, B, C and / or A ', B', C to which the cell is connected are energized II is in particular possible to dismantle the current transformers 23, after disconnection of the busbars 30 and of the connectors 29 An additional variant of a double busbar cubicle is presented in FIG. 9, it allows an arrangement to be made according to the electrical diagram present in FIG. 10
Ce schéma montre un exemple de caisson 1 '" de cellule destinée a permettre l'alimentation d'un départ par câbles a partir de deux jeux de conducteurs externes triphasés A, B, C et A', B', C, ici deux jeux de barres, ce caisson comportant un disjoncteur et deux sectionneurs 7 et 7' comme les caissons 1 ' et l 'DThis diagram shows an example of a 1 '"cell box intended to allow the supply of a cable feeder from two sets of three-phase external conductors A, B, C and A', B ', C, here two sets bars, this box comprising a circuit breaker and two disconnectors 7 and 7 'like the boxes 1' and the D
L'agencement du caisson 1 '" présente en figure 9 diffère des précédents en ce que le sectionneur a couteaux mobiles 7 et le sectionneur a couteaux mobiles 7' ont leurs couteaux de même phase articules sur des pièces porteuses 8 et 8'" qui sont fixées sur les supports isolants 6 et qui sont électriquement interconnectées deux a deux, comme montre sur la figure 9 pour les deux pièces 8 et 8 '" visibles sur cette figure La liaison établie entre deux pièces 8 et 8'" reliées au contact mobile d'une des chambres de coupure 2 de disjoncteur comporte ici une partie allongée qui s'étend ici parallèlement a cette chambre entre l'espace existant entre cette dernière et la traverse de renfort 3 1 que comporte le caissonThe arrangement of the box 1 '"shown in FIG. 9 differs from the previous ones in that the disconnector with movable knives 7 and the disconnector with movable knives 7' have their knives of the same phase articulated on load-bearing parts 8 and 8 '" which are fixed on the insulating supports 6 and which are electrically interconnected two by two, as shown in FIG. 9 for the two parts 8 and 8 '"visible in this figure The connection established between two parts 8 and 8" "connected to the movable contact d 'one of the circuit breaker interrupting chambers 2 here has an elongated part which here extends parallel to this chamber between the space existing between the latter and the reinforcing cross member 3 1 which the box comprises
Les liaisons entre le contact fixe de chaque chambre de coupure 2 et les câbles électriques externes 0 s'effectue de la même manière que dans la réalisation présentée en figure 1The connections between the fixed contact of each breaking chamber 2 and the external electric cables 0 is carried out in the same way as in the embodiment presented in FIG. 1
La cellule a double jeu de barres évoquée ci-dessus a pour important avantage de mettre en oeuvre des composants déjà exploites avec les cellules 1 et 1 " L'agencement de cellule présente en figure 1 1 est plus spécifiquement adapte au cas ou la cellule, de type "dead tank", selon l'invention est destinée a être exploitée en extérieur en liaison avec des lignes aériennes auxquelles se raccordent au moins certaines des traversées de courant de la cellule La cellule elle-même est analogue a celle présentée en figure 3 mis en part en le fait que les traversées de courant du caisson 1 " " qu'elle comporte y sont éventuellement alignées parallèlement a la face avant FA en un ou ici deux rangs de trois traversées comme on le voit sur la figure 12 pour les traversées respectivement référencées 17A a 17C et 17 A' a 17C Dans ce cas, les plots conducteurs 9 et éventuellement 9' que comportent le ou les sectionneurs y sont donc situes directement chacun sous une traversée a laquelle ce plot est électriquement relie par une pièce de dimensions limitées correspondant fonctionnellement a une des barres 10 ou 10' des réalisations préalablement décrites Un manchon en matériau elastomere isolant 32 recouvre un conducteur de liaison unipolaire 33 de raccordement a un des fils de phase d'une liaison aérienne qui vient se raccorder au caisson 1 "" au niveau d'une des traversées de courant, telle 17C, portée par la face supérieure FS du caisson Ce manchon s'emmanche sur la partie externe de cette traversée de courant, il est dimensionne de manière connue en soi de manière a permettre d'obtenir les distances diélectriques nécessaires entre conducteurs de phase et entre conducteurs de phase et de terre II comporte des ailettes de manière a augmenter la longueur de ligne de fuite Les conducteurs de liaison unipolaires sont cintres de manière connue en soi de manière a augmenter les distances diélectriques a l'extrémité des traversées Dans une forme préférée de réalisation, les manchons isolants 32 comportent chacun une partie cylindrique recouverte d'une couche conductrice mise a la terre permettant a chacun de venir chapeauter et protéger un ou plusieurs transformateur(s) de courant 34, de type torique, entourant le conducteur unipolaire 33 qui traverse le manchon considère, ce ou ces transformateur(s) étant posιtιonne(s) au niveau de la partie externe de la traversée de courant concernée, par exemple sur une partie cylindrique du manchon emmanchée sur cette partie externe de traversée et sous une seconde partie du manchon La couche conductrice que comporte chaque manchon se termine de manière evasee ou en arc de cercle au niveau de la seconde partie, au-dessus des traversées, de manière a réduire le champ électrique en extrémité de couche conductriceThe double busbar cell mentioned above has the important advantage of using components already used with cells 1 and 1 ". The cell arrangement shown in FIG. 1 1 is more specifically adapted to the case where the cell, of "dead tank" type, according to the invention is intended to be used outdoors in connection with overhead lines to which at least some of the current crossings of the cell are connected The cell itself is similar to that presented in FIG. 3 apart from the fact that the current crossings of the box 1 "" which it comprises are optionally aligned there parallel to the front face FA in one or here two rows of three bushings as seen in FIG. 12 for the bushings respectively referenced 17A to 17C and 17 A 'to 17C In this case, the conductive pads 9 and possibly 9' which comprise the switch (es) are therefore located there directly each under a crossing to which this stud is electrically connected by a part of limited dimensions corresponding functionally to one of the bars 10 or 10 ′ of the embodiments previously described A sleeve made of insulating elastomeric material 32 covers a unipolar connecting conductor 33 for connection to one of the phase wires an overhead connection which is connected to the box 1 "" at one of the current crossings, such as 17C, carried by the upper face FS of the box This sleeve is fitted onto the external part of this current crossing, it is dimensioned in a manner known per se so as to allow the necessary dielectric distances to be obtained between phase conductors and between phase and earth conductors II comprises fins so as to increase the length of the creepage line The unipolar connecting conductors are bent in a manner known per se so as to increase the dielectric distances at the end of the bushings In a preferred embodiment, the insulating sleeves 32 comprise each a cylindrical part covered with a grounded conductive layer allowing each to come to cap and protect one or more current transformer (s) 34, of toric type, surrounding the unipolar conductor 33 which crosses the sleeve considers, this or these transformer (s) being posιtιonne (s) at the level of the external part of the current crossing concerned, for example on a cylindrical part of the sleeve fitted on this external crossing part and under a second part of the sleeve The conductive layer which each sleeve comprises ends in a flared or circular arc at the level of the second part, above the crossings, so as to reduce the electric field at the end of the conductive layer
L'utilisation d'un caisson tel que 1 "", selon l'invention, permet de réaliser des cellules moyenne tension, isolées au gaz pour usage extérieur et raccordement a des lignes aériennes de distribution, qui comportent un disjoncteur, un ou des sectionneurs et une partie des éléments électriques de liaison indispensables loges dans un contenant de relativement faible volume par rapport aux agencements de cellule connus et ce avec des éléments constitutifs standardises dont au moins certains sont communs a diverses variantes de cellules selon l'invention Dans la mesure ou les sectionneurs électriquement situes de part et d'autre du disjoncteur sont prévus du type a trois positions comme indique plus haut, il est possible de mettre a la terre ou et en court-circuit l'une et /ou l'autre des lignes aériennes amont et aval reliées a l'un ou l'autre de ces sectionneursThe use of a box such as 1 "" according to the invention makes it possible to produce medium-voltage cells, gas-insulated for outdoor use and connection to overhead distribution lines, which include a circuit breaker, one or more disconnectors and some of the essential connecting electrical elements housed in a relatively small container by compared to known cell arrangements and this with standardized constituent elements, at least some of which are common to various variants of cells according to the invention To the extent that the electrically located disconnectors on either side of the circuit breaker are provided of the three-way type positions as indicated above, it is possible to earth or short-circuit either and / or the other of the upstream and downstream overhead lines connected to one or other of these disconnectors
Une mise a la terre s'effectue par exemple avec un sectionneur dont les couteaux sont en position de mise en service et donc relies aux traversées de courant, telles 17A, 17B, 17C, desservant la ligne a mettre en court-circuit par mise en position de mise a la terre des couteaux du second sectionneur et par fermeture du disjoncteur en mettant a profit le pouvoir de fermeture sur court-circuit propre a ce dernier L'opération peut bien entendu être réalisée de manière équivalente par inversion des positionnements des sectionneurs dans le cas ou la ligne est desservie par les traversées de courant 17' , 17'B, 17*CAn earthing is carried out for example with a disconnector whose knives are in the commissioning position and therefore connected to the current bushings, such as 17A, 17B, 17C, serving the line to be short-circuited by setting earthing position of the knives of the second disconnector and by closing the circuit breaker by taking advantage of the closing power on the short circuit specific to the latter The operation can of course be carried out in an equivalent manner by reversing the positions of the disconnector in the case where the line is served by current crossings 17 ', 17'B, 17 * C
Lorsque les sectionneurs sont en position de sectionnement, il est possible d'effectuer des vérifications sur le disjoncteur, alors que les lignes aériennes sont sous tension II en découle une grande facilite d'intervention et une grande sécurité d'exploitation pour l'operateurWhen the disconnectors are in the disconnection position, it is possible to carry out checks on the circuit breaker, while the overhead lines are energized. This results in great ease of intervention and great operational safety for the operator.
Il est bien entendu prévu de surélever le caisson 1 "" au moyen d'un châssis de support, non représente, de façon a respecter la hauteur minimale prévue pour les éléments sous tension de telles installations moyenne tension Il est prévu par ailleurs de réaliser des caissons analogues au caisson 1 "" ou le disjoncteur est directement relie aux traversées de courant, en l'absence de sectionneur dans le caisson Les éléments de liaison nécessaires a un tel agencement ne sont pas représentes ici, ce sont par exemple des barres conductrices reliant chacun des contacts mobiles ou fixes des chambres de coupure de phases du disjoncteur chacune a une partie interne d'une des traversées de courant portées par la paroi constituant la face supérieure FS du caissonIt is of course planned to raise the box 1 "" by means of a support frame, not shown, so as to respect the minimum height provided for the live elements of such medium voltage installations. It is also planned to make boxes similar to the 1 "" box or the circuit breaker is directly connected to the current bushings, in the absence of a disconnector in the box The connecting elements necessary for such an arrangement are not shown here, they are for example conductive bars connecting each of the mobile or fixed contacts of the phase cut-out chambers of the circuit breaker each has an internal part of one of the current bushings carried by the wall constituting the upper face FS of the box
Il est également prévu d'équiper la paroi basse d'un caisson 1 " " de la même manière que la partie basse d'un des caissons 1 , 1 " ou 1 '" respectivement présentes sur les figures 1 , 7 et 9, de manière a permettre le raccordement de transformateurs de courant toriques ou de tension et de câbles unipolaires externes par l'intermédiaire de connecteurs et de prises appropries Ceci ne sera pas développe plus avant ici, dans la mesure ou de tels équipements sont réalisables comme indique précédemment en liaison avec les figures rappelées ci-dessusIt is also planned to equip the bottom wall of a box 1 "" in the same way as the bottom part of one of the boxes 1, 1 "or 1 '" respectively present in Figures 1, 7 and 9, of so as to allow the connection of toroidal current or voltage transformers and external unipolar cables by means of appropriate connectors and sockets. This will not be further developed here, insofar as such equipment is achievable as indicated above in conjunction with the figures recalled above
Selon une variante non représentée de cellule, du type "dead tank", telle que définie ci-dessus, les traversées de courant etanches 17 sont fixées a l'une des extrémités de tubes métalliques inclines fixes par une autre extrémité au caisson au niveau des orifices ménages dans la face supérieure FS pour ces traversées de courant La différence d'orientation entre tubes est alors choisie pour que la nécessaire distance diélectrique entre extrémités des manchons isolants dont sont respectivement équipes les traversées soit respectée Ces manchons sont alors susceptibles d'être des manchons droits plus simples et moins coûteux que ceux présentes sur la figure 1 1 De plus il est alors possible de monter les transformateurs de courant, de type torique, directement autour des tubes métalliques inclines, ce qui simplifie aussi la réalisation et le montage According to a variant not shown of a cell, of the "dead tank" type, as defined above, the sealed current crossings 17 are fixed to one of the ends of inclined metal tubes fixed by another end to the box at the level of the household orifices in the upper face FS for these current bushings The difference in orientation between tubes is then chosen so that the necessary dielectric distance between the ends of the insulating sleeves with which the bushings are respectively fitted is respected These sleeves are then likely to be straight sleeves simpler and less expensive than those shown in Figure 1 1 In addition it is then possible to mount the current transformers, toroidal type, directly around the inclined metal tubes, which also simplifies the realization and assembly

Claims

REVENDICATIONS
1/ Cellule électrique a caisson métallique etanche, contenant au moins un disjoncteur et un sectionneur triphasés, pour interconnexion de barres conductrices externes et/ou de câbles électriques externes individuellement relιe(e)s a l'intérieur du caisson au travers de traversées de courant etanches, le disjoncteur ayant des chambres de coupure (2) disposées horizontalement et perpendiculairement a une face avant (FA) du caisson au travers de laquelle ce disjoncteur est commande de même que le sectionneur, ce dernier comportant des couteaux mobiles (7) entre au moins une position dite de service et une position dite de sectionnement et articules chacun sur une pièce porteuse (8), conductrice et fixe, portée par au moins un support isolant (6) d'une chambre de coupure a un contact mobile de laquelle cette pièce est raccordée, caractérise en ce que le caisson parallelepipedique rectangle et optimalement cubique comporte un sectionneur dont les couteaux mobiles sont orientes au moins a peu près verticalement en position de service, pour laquelle ces couteaux sont en contact avec des plots conducteurs (9) qui sont alignes horizontalement en parallèle a la face avant, qui sont situes au-dessus du sectionneur par rapport au disjoncteur dans le caisson et qui sont relies a des premières traversées de courant etanches ( 17A, 17B, 17C) portées par une face supérieure (FS) du caisson1 / Electrical cell with a sealed metal box, containing at least one three-phase circuit breaker and disconnector, for interconnection of external busbars and / or of external electric cables individually connected to the inside of the box through sealed current crossings , the circuit breaker having breaking chambers (2) arranged horizontally and perpendicular to a front face (FA) of the box through which this circuit breaker is controlled as well as the disconnector, the latter comprising movable knives (7) between at least a so-called service position and a so-called sectioning position and articulated each on a support piece (8), conductive and fixed, carried by at least one insulating support (6) of a breaking chamber has a movable contact of which this piece is connected, characterized in that the rectangular, optimally cubic parallelepiped box has a disconnector whose movable knives are oriented s at least approximately vertically in the service position, for which these knives are in contact with conductive pads (9) which are aligned horizontally in parallel with the front face, which are located above the disconnector with respect to the circuit breaker in the box and which are connected to first sealed current crossings (17A, 17B, 17C) carried by an upper face (FS) of the box
2/ Cellule selon la revendication 1 , caractérisée en ce qu'elle comporte des premières traversées de courant disposées sur la face supérieure du caisson de manière telle qu une première traversée de courant centrale ( 17C) soit directement au-dessus du plot et du couteau mobile centraux du sectionneur et en ce que les deux autres premières traversées de courant soient diagonalement alignées par rapport a cette première traversée de courant centrale et soient respectivement reliées chacune a un plot différent par une première barre conductrice ( 10) individuelle, ces barres, parallèles et disposées orthogonalement par rapport a la face avant, étant positionnées d'une manière svmetπque vis-a-vis de la première traversée centrale dans le caisson2 / cell according to claim 1, characterized in that it comprises first current crossings arranged on the upper face of the box so that a first central current crossing (17C) is directly above the stud and the knife central mobile of the disconnector and in that the other two first current crossings are diagonally aligned with respect to this first central current crossing and are respectively each connected to a different pad by a first individual conductive bar (10), these bars, parallel and arranged orthogonally to the front face, being positioned in a svmetπque manner vis-à-vis the first central crossing in the box
3/ Cellule selon l'une des revendications 1 , 2, caractérisée en ce qu'elle comporte un caisson contenant un sectionneur supplémentaire a couteaux mobiles (7') articules eux aussi chacun sur une pièce conductrice fixe (8', 8" ou 8'") portée par des supports isolants (6 , 6") d'une chambre de coupure (2) a un contact de laquelle cette pièce conductrice est raccordée ces couteaux mobiles étant eux aussi orientes verticalement dans une position de service pour laquelle ils sont en contact avec des plots conducteurs (9') alignes horizontalement en parallèle a la face avant, situes au-dessus de ce sectionneur supplémentaire par rapport au disjoncteur dans le caisson et relies a des secondes traversées de courant etanches ( 17'A, 1 7'B, 17'C) portées par la face supérieure du caisson, ledit sectionneur supplémentaire étant situe derrière l'autre sectionneur par rapport a la face avant du caisson 4/ Cellule selon l'une des revendications 1 a 3, caractérisée en ce que, dans une position de mise a la terre, les dits couteaux mobiles, au moins approximativement orientes horizontalement, sont en contact chacun avec un plot de mise a la terre ( 1 1 ) porte par une traverse de renfort (3 1 ) horizontale disposée centralement entre des parois latérales du caisson au-dessus des chambres de coupure du disjoncteur3 / cell according to one of claims 1, 2, characterized in that it comprises a box containing an additional disconnector with movable knives (7 ') also articulated each on a fixed conductive part (8', 8 "or 8 '') carried by insulating supports (6, 6 ") of a breaking chamber (2) to a contact to which this conductive part is connected, these movable knives also being oriented vertically in a service position for which they are in contact with conductive pads (9 ') aligned horizontally in parallel to the front face, located above this additional disconnector relative to the circuit breaker in the box and connected to second sealed current crossings (17' A, 1 7'B, 17'C) carried by the upper face of the box, said additional disconnector being located behind the other disconnector relative to the front face of the box 4 / Cell according to one of claims 1 to 3, characterized in that, in a grounding position, the said movable knives, at least approximately oriented horizontally, are each in contact with a grounding stud (1 1) carried by a reinforcing crosspiece (3 1 ) horizontal arranged centrally between side walls of the box above the circuit breaker breaking chambers
5/ Cellule selon l'une des revendications 1 a 4, caractérisée en ce qu'elle comporte un sectionneur dont, en position de sectionnement les couteaux mobiles sont électriquement isoles des plots (9) relies aux premières traversées de courant et des plots de mise a la terre ( 1 1 ) inclus dans le caisson, ces couteaux étant bascules a mi-chemin entre les deux positions de service et de mise a la terre 6/ Cellule, selon l'une des revendications 3 a 5, caractérisée en ce qu'elle comporte des secondes traversées de courant disposées de telle sorte qu'une seconde traversée de courant, dite centrale, ( 1 7'C) soit directement au-dessus du plot et du couteau mobile centraux du sectionneur supplémentaire, que les deux autres secondes traversées de courant ( 17'A, 17'B) soient diagonalement alignées par rapport a cette seconde traversée de courant centrale et soient respectivement reliées chacune a un plot différent par une seconde barre conductrice individuelle ( 10'), ces deux secondes barres étant positionnées d'une manière symétrique par rapport a la traversée centrale correspondant au plot central du sectionneur supplémentaire dans le caisson Il Cellule, selon l'une des revendications 3 a 6, caractérisée en ce que le sectionneur et le sectionneur supplémentaire ont leurs éléments correspondants (7, 7' et 9, 9') disposes a l'alignement et au même niveau horizontal dans le caisson de même que les premières et secondes barres (10, 10') de même phase 8/ Cellule, selon l'une des revendications 1 a 7, caractérisée en ce qu'elle comporte un caisson muni de tubes cintres unipolaires ( 19) externes qui se raccordent chacun au caisson au niveau d'orifices ménages dans la partie arrière de la paroi inférieure plane (FI) de ce caisson, qui assurent chacun le passage d'un élément conducteur (20) différent, ce dernier pénétrant dans le caisson pour se connecter a une pièce conductrice fixe (21 ) portée par au moins un support isolant (6) d'une chambre de coupure (2) au contact fixe de laquelle cette pièce est électriquement reliée et qui permettent chacun le raccordement d'au moins un câble électrique unipolaire (O) par l'intermédiaire d'une traversée de courant etanche (22) logée au niveau d'une extrémité du tube qui la contient et orientée horizontalement et vers l'avant du caisson sous lequel les tubes sont positionnes 9/ Cellule, selon l'une des revendications 1 a 8, caractérisée en ce qu'elle comporte un caisson muni de tubes unipolaires droits (24), externes, qui se raccordent chacun au caisson au niveau d'orifices ménages dans la partie arrière de la paroi inférieure plane de ce caisson, en arrière de ceux prévus pour d'éventuels tubes unipolaires cintres, qui assurent chacun le passage d'un élément conducteur (25) différent pénétrant dans le caisson pour se connecter a une pièce conductrice fixe ( 1 ) portée par au moins un support isolant (6) d'une chambre de coupure (2) au contact fixe de laquelle cette pièce est électriquement reliée et qui permettent notamment chacun le raccordement d une phase d'un transformateur de tension (28) externe 10/ Cellule, selon l'une des revendication 3 a 5, caractérisée en ce qu'elle comporte des secondes traversées de courant etanches ( 17'A, 17'B, 17'C) portées par la face supérieure (FS) du caisson en arrière des premières traversées de courant ( 1 7A, 17B, 17C) dans une disposition identique a celle de celles-ci par rapport a la face avant (FA) de ce caisson, ces secondes traversées étant respectivement reliées chacune a une des premières traversées par une barre conductrice ( 10") qui leur est commune et qui est logée a l'intérieur du caisson parallèlement a la face supérieure du caisson, ces barres étant parallèles entre elles5 / cell according to one of claims 1 to 4, characterized in that it comprises a disconnector whose, in the sectioning position, the movable knives are electrically isolated from the pads (9) connected to the first current crossings and from the setting pads to earth (1 1) included in the box, these knives being tilted halfway between the two service and earthing positions 6 / Cell, according to one of claims 3 to 5, characterized in that '' it includes second current crossings arranged so that a second current crossing, called central (1 7'C) is directly above the central block and movable knife of the additional disconnector, than the other two seconds current crossings (17'A, 17'B) are diagonally aligned with respect to this second central current crossing and are respectively each connected to a different pad by a second individual conductor bar (10 '), these two second bars being positioned symmetrically with respect to the central bushing corresponding to the central stud of the additional disconnector in the Il Cellule box, according to one of claims 3 to 6, characterized in that the disconnector and the additional disconnector have their corresponding elements (7, 7 'and 9, 9') arranged in alignment and at the same horizontal level in the box as well as the first and second bars (10, 10 ') of the same phase 8 / Cell, according to one of claims 1 to 7, characterized in that it comprises a box provided with external single-pole hanger tubes (19) which each connect to the box at the level of household orifices in the rear part of the flat bottom wall (FI) of this box, which each ensure the passage of a different conductive element (20), the latter penetrating into the box to connect to a fixed conductive part (21) carried by at least one insulating support (6) of an interrupting chamber (2) in fixed contact from which this part is electrically connected and which each allow the connection of at least one unipolar electric cable (O) via a watertight current bushing (22) housed at one end of the tube which contains it and oriented horizontally and towards the front of the box under which the tubes are positioned 9 / cell, according to one of claims 1 to 8, characterized in that it comprises a box provided with straight unipolar tubes (24), external, which are each connected to the box at the level of household orifices in the rear part of the planar lower wall of this box, behind those provided for possible single-pole hanger tubes, which each ensure the passage of a conductive element eur (25) different penetrating into the box to connect to a fixed conductive part (1) carried by at least one insulating support (6) of a breaking chamber (2) to the fixed contact of which this part is electrically connected and which in particular each allow the connection of a phase of an external voltage transformer (28) 10 / cell, according to one of claims 3 to 5, characterized in that it comprises second sealed current crossings (17'A , 17'B, 17'C) carried by the upper face (FS) of the box behind the first current bushings (1 7A, 17B, 17C) in an arrangement identical to that of these with respect to the front face (FA) of this box, these second crossings being respectively connected each to one of the first crossings by a conductive bar (10 ") which is common to them and which is housed inside the box parallel to the upper face of the box, these bars being parallel between they
I L Cellule, selon l'une des revendications 3 a 7 caractérisée en ce qu'elle comporte un caisson dans lequel le sectionneur (7, 9, 10) et le sectionneur supplémentaires (7', 9', 10') sont symétriquement disposes par rapport a un plan passant par les plots de mise a la terre ( 1 1 ), le sectionneur supplémentaire ayant des couteaux mobiles (7') montes chacun sur une pièce porteuse conductrice (8') fixée sur au moins un support isolant (6) d'une chambre de coupure, les couteaux mobiles du sectionneur supplémentaire étant électriquement relies chacun a un contact fixe d'une des chambres de coupure (2) au contact mobile de laquelle est électriquement relie un couteau mobile (7) du sectionneur loge dans le même caisson 12/ Cellule, selon la revendication 9, caractérisée en ce qu'elle comporte un caisson a sectionneur (7, 9, 10) et sectionneur supplémentaire (7', 9', 10') sont symétriquement disposes par rapport a un plan passant par les plots de mise a la terre ( 1 1 ), le sectionneur supplémentaire ayant des couteaux mobiles montes chacun sur une pièce porteuse conductrice fixe (8") électriquement reliée a un contact fixe d'une des chambres de coupure (2) par l'intermédiaire d'une pièce conductrice fixe (21 ), que porte au moins un support ιsolant~(6) de cette chambre de coupure, et de deux éléments conducteurs (25, 20) relies a des traversées etanches (26, 22) et raccordes entre eux a l'extérieur du caisson par l'intermédiaire d'un conducteur isole et cintre (30) et de connecteurs (27, 29) permettant le montage de transformateurs de courant, de tension a l'extérieur du caisson, la pièce conductrice (8"), un premier des éléments conducteurs (25), le conducteur isole (30), un second des éléments conducteurs (20) et la pièce conductrice fixe (21 ) relatifs a un couteau étant électriquement en série dans cet ordreIL cubicle, according to one of claims 3 to 7 characterized in that it comprises a box in which the disconnector (7, 9, 10) and the additional disconnector (7 ', 9', 10 ') are symmetrically arranged by relative to a plane passing through the earthing studs (1 1), the additional disconnector having movable knives (7 ′) each mounted on a conductive support piece (8 ′) fixed on at least one insulating support (6) a breaking chamber, the movable knives of the additional disconnector being electrically connected each to a fixed contact of one of the breaking chambers (2) to the movable contact of which is electrically connected a movable knife (7) of the disconnector housed in the same box 12 / cubicle, according to claim 9, characterized in that it comprises a disconnector box (7, 9, 10) and additional disconnector (7 ', 9', 10 ') are symmetrically arranged with respect to a plane passing through the earthing studs (1 1), the additional disconnector having movable knives each mounted on a fixed conductive carrier part (8 ") electrically connected to a fixed contact of one of the breaking chambers (2) by the intermediate of a fixed conductive part (21), which carries at least one insulating support ~ (6) of this breaking chamber, and two conductive elements (25, 20) connected to sealed bushings (26, 22) and connections between them outside the box through an insulated conductor and hanger (30) and connectors (27, 29) allowing the mounting of current and voltage transformers outside the box, the conductive part (8 "), a first of the conducting elements (25), the insulating conductor (30), a se cond of the conductive elements (20) and the fixed conductive part (21) relating to a knife being electrically in series in this order
13/ Cellule, selon l'une des revendications 3 a 9, caractérisée en ce qu'elle comporte un caisson dans lequel le sectionneur supplémentaire a des couteaux mobiles "(7') qui sont respectivement positionnes chacun avec le couteau mobile (7) de même phase du sectionneur avec lequel il est loge dans le même caisson, sur des pièces porteuses (8,8'"), conductrices, qui sont fixées sur au moins un support fixe et isolant (6) de chambre de coupure et qui sont électriquement reliées entre elles par une liaison qui s'étend dans l'espace existant entre la chambre de coupure auquel le support isolant est affecte et la traverse (3 1 ) que comporte le caisson 14/ Cellule, selon l'une des revendications 1 , 3, 4, 5, 7, 8, 9, 1 1 , caractérisée en ce qu'elle comporte des traversées de courant portées par une face supérieure (FS) du caisson ( 1 ""), prévues pour être raccordées a des lignes aériennes de distribution par l'intermédiaire de conducteurs de liaison unipolaires (33) connectes aux parties externes respectives des traversées de courant, chaque conducteur étant muni d'un manchon elastomere isolant (32) qui le recouvre en extrémité et qui s'emmanche sur la partie externe de la traversée de courant a laquelle est connecte ce conducteur 15/ Cellule, selon la revendication 14, caractérisée en ce qu'elle comporte des traversées de courant prévues pour être raccordées a des lignes aériennes de distribution par l'intermédiaire de conducteurs de liaison unipolaires (33) qui sont équipes de manchons elastomeres isolants et autour lesquels sont montes des transformateurs de courant, de type torique, (34) 16/ Cellule, selon l'une des revendications 1 à 15, caractérisée en ce qu'elle est remplie d'un gaz diélectrique de protection. 13 / cubicle, according to one of claims 3 to 9, characterized in that it comprises a box in which the additional disconnector has movable knives " (7 ') which are respectively positioned each with the movable knife (7) of same phase of the disconnector with which it is housed in the same box, on load-bearing (8.8 '"), conductive parts, which are fixed on at least one fixed and insulating support (6) of the breaking chamber and which are electrically connected together by a link which extends in the space existing between the breaking chamber to which the insulating support is affected and the crosspiece (3 1) that comprises the box 14 / cell, according to one of claims 1, 3 , 4, 5, 7, 8, 9, 1 1, characterized in that it comprises current bushings carried by an upper face (FS) of the box (1 ""), intended to be connected to overhead lines of distribution via unipolar connecting conductors (33) con nect to the respective external parts of the current bushings, each conductor being provided with an insulating elastomer sleeve (32) which covers it at the end and which is fitted on the external part of the current bushing to which this conductor is connected 15 / Cell, according to claim 14, characterized in that it comprises current crossings intended to be connected to overhead distribution lines by means of unipolar connecting conductors (33) which are provided with elastomeric insulating sleeves and around which are mounted current transformers, toroidal type, (34) 16 / cell, according to one of claims 1 to 15, characterized in that it is filled with a dielectric protection gas.
EP98917242A 1997-04-08 1998-03-26 Electric cell with sealed metal casing Expired - Lifetime EP0906648B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9704260A FR2761825B1 (en) 1997-04-08 1997-04-08 WATERPROOF METAL BOX ELECTRIC CELL
FR9704260 1997-04-08
PCT/FR1998/000614 WO1998045913A1 (en) 1997-04-08 1998-03-26 Electric cell with sealed metal casing

Publications (2)

Publication Number Publication Date
EP0906648A1 true EP0906648A1 (en) 1999-04-07
EP0906648B1 EP0906648B1 (en) 2002-07-03

Family

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Application Number Title Priority Date Filing Date
EP98917242A Expired - Lifetime EP0906648B1 (en) 1997-04-08 1998-03-26 Electric cell with sealed metal casing

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EP (1) EP0906648B1 (en)
JP (1) JP2000511760A (en)
DE (1) DE69806319T2 (en)
ES (1) ES2178202T3 (en)
FR (1) FR2761825B1 (en)
HK (1) HK1020459A1 (en)
WO (1) WO1998045913A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3667150B2 (en) * 1999-05-21 2005-07-06 三菱電機株式会社 Gas-filled switchgear
DE102010018326A1 (en) * 2010-04-27 2011-10-27 Areva Energietechnik Gmbh Electrical switchgear, in particular medium-voltage switchgear
FR2968119B1 (en) * 2010-11-29 2012-12-28 Areva T&D Sas TRAVEL AND TANK DERIVATION MODULE OF A MEDIUM VOLTAGE ELECTRICAL EQUIPMENT, METHOD FOR PRODUCING THE SAME, AND ELECTRICAL CONNECTION THEREOF
CN102306586A (en) * 2011-08-27 2012-01-04 魏献通 Three-station isolation grounding switch operating mechanism of combined electrical appliance
CN104143460B (en) * 2014-07-08 2017-09-19 厦门市恒源新电力设备有限公司 A kind of closed plug-in strip earthed switch

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Publication number Priority date Publication date Assignee Title
DE3436173A1 (en) * 1984-08-22 1986-03-06 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Switching installation
DE4103101C3 (en) * 1990-03-22 1996-08-14 Mitsubishi Electric Corp Disconnector, as well as compressed gas-insulated manual transmission with such
DE19511736A1 (en) * 1994-04-18 1995-10-19 Abb Patent Gmbh Control panel with a three-pole circuit breaker arranged inside a control cabinet
DE29501081U1 (en) * 1995-01-13 1995-03-23 Siemens Ag Arrangement of coupling fields in encapsulated medium-voltage switchgear
DE19518126A1 (en) * 1995-05-17 1996-11-21 Josef F Perle Circuit breaker

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Title
See references of WO9845913A1 *

Also Published As

Publication number Publication date
FR2761825A1 (en) 1998-10-09
WO1998045913A1 (en) 1998-10-15
ES2178202T3 (en) 2002-12-16
DE69806319D1 (en) 2002-08-08
FR2761825B1 (en) 1999-05-14
HK1020459A1 (en) 2000-04-20
JP2000511760A (en) 2000-09-05
DE69806319T2 (en) 2003-02-20
EP0906648B1 (en) 2002-07-03

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